The Village Voice has a funny essay about the author's tour through different levels of vegetarianism.
My own private Idaho potato went like this: When I was a teenager a renowned South African acupuncturist moved in next door to my parents. He and his wife (who pronounces lime like lamb, thus leading to the infamous pie recipe debacle) are still the hippest couple my parents know and single-handedly responsible for introducing them to Whole Foods and the Fugees. One day I told the acupuncturist I wanted to be a vegetarian. I wish I could remember why I wanted to stop eating meat, but this was high school and I also wish I could remember my motivation for drinking Zima and wearing flannel in public.