I could go one step further and say it'd be a little hypocritical unless you grew your own food, wove your own clothes from your own cotton, and built your own house from lumber you grew and cut and rocks you quarried and moved on your own property with your own two hands.

We consume on so many levels, food is only one layer. You'd have to give up just about everything including money if you really wanted to make a legitmate claim about non-impacting the environment and living a healthier life. I know a few strict vegetarians that are as obese and unhealthy as any meat eater, and a few old, lean injuns that barely ever eat anything but meat. It isn't a health choice or an environmental choice, so it must be strictly a lifestyle choice that people go for the vegetarian thing, so far as I can tell. That's absolutely acceptable, long as they don't try and peddle it for anything more than what it is.