Sounds more like a goal for us to one day get over our barbarism and become something much more than just the "tyranid" in the galaxy. Though I guess some folks like that prospect since it may give a sense of power and awe.
People hat nids because nids eat them. Also, they do not eat to feed hunger but to gorge on biomass. And they have no soul, quite literally. They are soulless, ravenous-but-not-starving, unintelligent-unless-linked, space locusts that will eat you, your family, your friends, everyone else, the planet, and then leave to do it again. You can't even just kill them until there are no more because they eat their dead and make more of themselves. More of themselves so they can eat more of you.
But fightin' da nidz iz great!! Derz zoggin' loadz ov 'em, an' deyz still not lerned dat da Orks iz made fer fightin' an' winnin'. Dunt eat too much ov 'em do. I ain't seen such an upset belly since dat Gorkonaut's belly gun 'sploded.
Much like the orks they could overrun humanity if left unchecked. So yes, you could say they are more "might makes right". That doesn't mean that humanity will take that standing down. Because the only way to stop a nid invasion is to destroy the norn queen in the hive ship, and then the surviving nids become feral. So much like orks once you get nids you won't be getting rid of them any time soon.
Last I heard, the Tyranids were slaughtering everything in their path with very little successful resistance, ignoring massive casualties and consuming all biomass on a planet anyways. And the number of Tyranids in the Milky Way was but a fraction of their total number. Don't get me wrong, I know why humans fight back - nothing likes being eaten. I just can't see Tyranids as evil when their destruction is based on the need to eat and grow, a need which any organic life form should find sympathetic.
It's not a need to eat. Tyranids might not even be capable of starving as far as we know. And hive fleets havw been killed. Norn queens hold the base code for all tyranids of that tendril. Make a poison that is tailored to the queen the queen and it trickles down. I think only one has been killed so far.
They can starve but they go into stasis before that. The Queens are well known weakness of the hive but they never found them. One has been "killed" by their own, it came from the north sector and disappeared, just like that. The main thought is that the tendril has been consumed by another one. If I find my old codex I'll come back on that statement. Multiple tendrils has been slowed down in their progress, one by Eldar (at the cost of an entire CraftWorld, Malantaï, thus creating the Bane of Malantaï, a humongous Zoanthrope.), one by necron and maybe more but I dunno about them. One stopped, but not decimated, by the UltraMarine, by the power of the lulz.
Applying real biology to them, the Dimachaeron would starve within about fifteen minuets of it being birthed given it's metabolism. My favorite was the Heriophant bio-titan. You need to slough off seven tonnes of it's mass every second just to out pace it's freakish regeneration. Ya fergot da Orks, git! But, I'll fergive ya, fer now anyway. Dat inquisitive type sent sum ov dem genesneakers in ta da Ork Empire of Oktavius. And den propa nids started showin' up. An' den more nids- and den more nids- den da boss dere zogged 'em, who woz i'msen zogged by da big sneaky wunz wiv tentakle faces. Da Orkz is gunna win, do. An' yer just mite 'av a second War of the Beast wen we'z do. 'cos da fing i don't fink 'e fought about, woz dat Orks thrive on konflict! Oooh, and fightin' da nids iz a dream come true. Ya zog wun, two more take it'z place! We'z gunna get out ov it bigga an' tuffa. Or da nidz will, if dey sumow counter da green tide.
