+1. Large numbers of Hindus, for instance, are vegetarian, as a requirement of their religion. That's not so much a choice as a deep-rooted part of who they are. In my case, I refuse to eat meat for ethical reasons, and that, too, is not so much a choice as a compulsion. I'm not trying to stop other people from eating their meaty meals, and I'm not sure how places carrying a vegetarian or vegan option would prevent that. Case in point: Subway, Zambreros, Opporto - all carry vegetarian options.