My girlfriend and I don't really buy much meat, mainly because it is so expensive. It tends to add 2 or 3 pounds onto the cost of the meal, and doesn't really add much to the enjoyment of the meal. That's not to say we are vegetarians though. She doesn't like the taste of meat much, but will still eat bacon (obviously) and if we go out for a meal, i'll usually order meat.
Basically i consider us veggie 6 days out of 7, which i think is fine. If i was to become vegetarian, it would be from environmental grounds; i.e the amount of land/resources used to rear meat far outweighs that to grow crops. So not eating meat for most of the week helps that i think. Anywho, i wouldn't thrust my diet on someone else, so i don't like it when people do the thrusting at me.
What does annoy me is Organic food. I purposely don't buy organic food from the supermarket, even if there's no other choice or it's cheaper (Ha!). My father works in the agronomy world as a research scientist, and i've read articles by some of his colleagues explaining how much bullshit the organic industry really is. I don't mean people growing vegetables in their back gardens obviously - that's no doubt fine and probably very healthy indeed.
It is commercially grown organic food however which is total bullshit. There's an interesting article here about it.
Basically a lot of Organic companies go so far out of their way not to use 'synthetic' chemicals, that they often use 'natural' chemicals which are not only far more dangerous than the synthetic ones, but they havn't gone through the rigourous testing process just on the basis that they are 'natural' and are therefore 'safe'.
Anyway, that's just my thoughts.