I just avoid meat when I can, although I haven't been strict enough recently mainly because I was trying to make a good impression on my girlfriends parents, and her mum scares me sometimes so I didn't want to risk turning their food down.
I know it's 'natural' to eat meat to a certain degree, but I just disagree with the ethics. I'll eat all of that natural farm meat which isn't animals bred to be killed.
Plus, my diet is usually cheaper without the meat in it
And there's loads of veggie options nowadays anyway.