Ugh I'm annoyed by vegans!
Why do vegans bother you?
I don't share their views on eating.
I understand that you are annoyed by vegans due to their dietary choices.  However, you should still respect their choices or else people may see you as prejudiced.
They shouldn't feel bad about themselves. I'm not going to change my eating habits just because they feel that way. It's their problem.
Vegans aren't trying to harm anyone. They're concerned about the environment as we all should be. Instead of hating them have a little respect for what they're preaching in regards to the planet.