Yes I see no problems with eating humans, meat is meat... If you bred and raised them and killed them with them barely being aware of it yes.
You expect me to believe you have no problem with me eating my children? Or perhaps I can capture you and a woman, get you two to breed and then eat your offspring. If it's not okay for me to do this to you, then you can't expect it being okay for anyone else. Thus we can't eat humans.
we evolved to process it, hence it's totally natural for us
Fair enough that factory farming is not at issue, however just because we evolved a natural process doesn't mean we succumb to it. We also evolved processes for sex and forcing it upon others - that's not acceptable in any fashion.
It's different from bear hunting because the bear isn't capable of taking things into account other than it's own hunger and instincts how to quench it.
Still didn't explain why it's ok to kill plants and not animals..
Plants don't resist me when I pick them from the ground. Ever seen chickens go to slaughter? They do everything in their power to get out of there, and every other chicken in the vicinity is very well aware of what's going on.
In contrast to plant, I can take off leaves, take a nib while it's growing, and no reaction. There are physiological reactions, but nothing that shows pain, resistance, or even awareness. Just a reaction to matter being removed. If you need me to cite this I will, but there are many studies out there observing plan behavior.
Please explain what you mean by:
kill a plant on a timescale where it can react
Also, plants have no CNS, therefor cannot feel pain/suffer, thus okay to kill. With meat that can do this, I eat it. For example oysters which are closer to a moving plant than to a cow.