How do religious people justify raising and slaughtering animals for food?

[notimportant1234]

We are just going into the absurd here, but I'll go along . Would it had helped if we had absolute knowledge from the start ? Imagine what would a barbarian would do if he would have known how to make a nuclear bomb or to make guns because if you want scientifical knwoledge from the start then that kind of information would have been available also there is no half measure. I mean we have brains, this are problems that we can solve and are the only problems that we are trying to solve , we tryed so little to improve ourselfs