Nor do they got what it was really about. &BTW, sorry about the spoilers; it's not that much a deal. It's just that I couldn't find a better way of describing it without resorting to some telling; sadly. Know also from the start that the show was almost ruined by it's fifth season; underrated otherwise, nevertheless. So don't judge it too harsh solely on that account.
I don't know if the creators of the show had in mind to convey what I interpreted; but to me, the show was a clear metaphor of the dualistic human existence; male/female, love/hate, peace/war, animal/spirit, etc. And how only unifying those elements we could not only become whole again, but also stop our ever mongering self destruction spiral. EtFC was slow paced; but it was OK, since it only had one main theme to start with. A singular alien race known as the Taelons suddenly lands on Earth claiming peace, goodwill and all that hoopla; and the protagonists set forth to find out it's true intentions for being here. After all; just because something seems benevolent, doesn't mean it really is. And of course; there's certainly a catch. As it's later revealed they need our help in surviving; since they're been having a war with another species, know as the Jaridians. The latter have been winning the war lately, as they are more violent and have larger troops than the taelons; due to their higher sex drive. They lack however, the tech sophistication of the taelons; which are more intelligent; and also their higher lifespan. If it seems too convenient that their advantages and weakness compensate so diametrically well; it's because by it's fateful design. You see, it turns out that a long time ago both used to be the same race. They "evolved" to what are today by branching out of the same org species. Lit; I mean, they split themselves like unicellular organisms. Only at a higher energy level state that somehow manifested in the physical plane; or viceversa, doesn't really matter. But unsurprisingly, it turns out now; they're not actually evolving, but devolving. Lifespan for the jars is so low, they're starting to die in the womb. And taes have such low birthrates to death ratio, that they're virtually extinct. So the obv & logical "solution" is to return to the org race that started it all right away; as it was meant to be. Of course, that would've make a pretty short and boring show; since it'd take out all the conflict from the title. I assume you're clever enough to remember what I stated earlier on and put all what together now. Still, the question remains; why do they still need us?
The only other things left to mention about the show then are that acting was also OK; and so the chars, plot and dev. Prod values were high for the time, as were the special effects. Inconsistencies could always be attributed to the alien nature of the show; to a reasonable degree. Not all seasons kept the same consistency level though, but it still managed to be a good show overall. Season one being the best; with all the mystery. Followed by 2 to 4; which were more action driven, explanatory, and had more twists. And then, there was the unnecessary dreaded last season; where it all collapsed and went down the drain with the introduction of a newer race. Since by then it had completely lost sight of it's intended purpose, and was a pathetic attempt of saving itself by lousy reinvention; that was a clear jumping the shark moment. I org even thought it was just an intentionally filler arc and that they'd eventually return to the main story line; but it turned out they never did, and actually ended it right there. I'd been better to actually never air anything of it, and leave an open ending at the one before; since we felt so raped by it on their behalf. And yes; it's that bad. Gene should've left not only a person in charge; anticipating his own passing, like a will; but some manuscripts as well, to avoid twisting in his grave right now...
I don't know if the creators of the show had in mind to convey what I interpreted; but to me, the show was a clear metaphor of the dualistic human existence; male/female, love/hate, peace/war, animal/spirit, etc. And how only unifying those elements we could not only become whole again, but also stop our ever mongering self destruction spiral. EtFC was slow paced; but it was OK, since it only had one main theme to start with. A singular alien race known as the Taelons suddenly lands on Earth claiming peace, goodwill and all that hoopla; and the protagonists set forth to find out it's true intentions for being here. After all; just because something seems benevolent, doesn't mean it really is. And of course; there's certainly a catch. As it's later revealed they need our help in surviving; since they're been having a war with another species, know as the Jaridians. The latter have been winning the war lately, as they are more violent and have larger troops than the taelons; due to their higher sex drive. They lack however, the tech sophistication of the taelons; which are more intelligent; and also their higher lifespan. If it seems too convenient that their advantages and weakness compensate so diametrically well; it's because by it's fateful design. You see, it turns out that a long time ago both used to be the same race. They "evolved" to what are today by branching out of the same org species. Lit; I mean, they split themselves like unicellular organisms. Only at a higher energy level state that somehow manifested in the physical plane; or viceversa, doesn't really matter. But unsurprisingly, it turns out now; they're not actually evolving, but devolving. Lifespan for the jars is so low, they're starting to die in the womb. And taes have such low birthrates to death ratio, that they're virtually extinct. So the obv & logical "solution" is to return to the org race that started it all right away; as it was meant to be. Of course, that would've make a pretty short and boring show; since it'd take out all the conflict from the title. I assume you're clever enough to remember what I stated earlier on and put all what together now. Still, the question remains; why do they still need us?
The only other things left to mention about the show then are that acting was also OK; and so the chars, plot and dev. Prod values were high for the time, as were the special effects. Inconsistencies could always be attributed to the alien nature of the show; to a reasonable degree. Not all seasons kept the same consistency level though, but it still managed to be a good show overall. Season one being the best; with all the mystery. Followed by 2 to 4; which were more action driven, explanatory, and had more twists. And then, there was the unnecessary dreaded last season; where it all collapsed and went down the drain with the introduction of a newer race. Since by then it had completely lost sight of it's intended purpose, and was a pathetic attempt of saving itself by lousy reinvention; that was a clear jumping the shark moment. I org even thought it was just an intentionally filler arc and that they'd eventually return to the main story line; but it turned out they never did, and actually ended it right there. I'd been better to actually never air anything of it, and leave an open ending at the one before; since we felt so raped by it on their behalf. And yes; it's that bad. Gene should've left not only a person in charge; anticipating his own passing, like a will; but some manuscripts as well, to avoid twisting in his grave right now...