Responses

Usually, in a wolf pack, the omega wolf would be bullied by the other wolves to toughen them up. Not to necessarily kill them. It's because the weak wolf might've been a burden to them when they're in the wild. They're treated bad to make them get stronger. And alphas are there to lead the pack.
But in the omegaverse drama, I have no idea what's the inspiration. Omega's a tool for childbirth, and so they're treated as a sex tool. That is somewhat very offending to us females.
I honestly don't understand why omegas are treated so badly, even in regular books