In this case I totally agree with Walt. People ask because they are nosy. It is a personal question and if you don't want to answer it-don't. How many people run around and ask, "Why are you a carnivore, anyway?"

Actually, let's think of the silliest/stupidest/ickiest reasons to be a veggie and see what people say when we tell them these when they ask.

I am allergic to meat.

I ran out of A1 steak sauce a long time ago and haven't gotten more.

I am trying to piss off my parents.

My best friend is a chicken and I feel guilty eating his relatives.

Hey, what kind of tampons do you use?