I have no problem with vegans, just the crazy ones that try to force me what I should eat.
Then vegans claim the world would be better if every human were vegan. If that were the case animals would over populate. We'd have a huge ass population of rabbits and deer, etc eating all our vegetation leaving humans nothing to eat. We would starve to death or start rising up and eating animals.
If they don't start eating animals at that point there would have to be mass genocide of specific animals to keep them from eating our vegetables. Also their meat will be wasted because in a world that doesn't believe in eating meat they will just incinerate it.