Is it really unnatural/unhealthy to eat meat?

Jainism is a religion around India, and they don't kill any living animal. I'm vegetarian, but I still think it is natural to eat meat, it even says so In the bible. But I still won't because I think that we shouldn't decide when an animal's life should be over, and like I wouldn't want someone killing me, so I'm sure they don't want anyone killing them