here is some research.

That's not research, that's an opinion with news articles and one or two slightly relevant but not so relevant more scientific-articles.

humans need meat. you might be able not to eat but most need it. raping is a violent action that is not necessary for survival.

We need meat because...you cannot control yourself from killing animals and eating their decomposing bodies?
Sorry but everything you say is exactly what we can say.
We hold ourself to our own morals, you do not.