Talk:Stalker/@comment-72.230.105.141-20161214023945/@comment-90.184.79.169-20170209191540

Why the Tenno wiped out the Orokin? Because they were evil, evil bastards that make both Grineer and Corpus look like choir boys.

Even without the war against the Sentients, they would be a group of body-snatching megalomaniacs that cheerfully engineered slave race, having not a shred of empathy. The war drove them to further atrocities, such as converting the Grineer from a peaceful laborer race to a warrior race or unleashing the Infested upon the galaxy. As for the Orokin attitude towards Tenno, it was fear and revulsion. There was one Orokin that showed them compassion, and the rest of the Orokin sentenced her to death for it.

With the war over, the Tenno would either be exterminated as the threat they rightly posed to the Orokin, or they would become obedient servants for slaughtered primitive societies, as well as serve as exotic pets/body-snatching victims.

Pretty much every version of humanity, engineered or not, had an interest in seeing the Orokin gone, because with them in power there was no hope of being anything but a slave.

TLDR; they were the cruel but beautiful and hyper-intelligent pseudo-gods you tend to get in fiction. Not unlike you see in Stargate or the Sith from Star Wars.