No, I'm not. But I wish I was, because I do believe it's the compassionate way of living.
Man kind has no real reason to eat meat except for its own pleasure. We're smart enough to know that proteins and other nutritients can be gained elsewhere, and crafty enough to get ahold of these products instead of killing animals. So saying you eat meat because "it's the natural thing to do" would be like referring to chimps to defend an act of rape. Monkeys rape, so that's also natural isn't it? We separated ourselves from animals long ago, and carry the responsibility to act accordingly.
Nevertheless, I've tried vegetarianism and even being a vegan. But I'm too fond of meat (pun?) and always end up having a juicy burger or barbequed ribs. So I admit that I give into that urge at the cost of animal lives. Just like I eat candy despite it's unhealthy, and drive fast despite knowing it can cost me my life. No one is perfect. I do however try my best to make sure the meat I eat does not come from suffering animals or bad farming.
Another argument often put forward but people to counter vegetarians is how "my effort makes little difference, those animals will die anyway." This is an absurd way of thinking in a democracy. It would mean that you should not vote, and you should not save a person's life given the chance - because the outcome is not solely dependent on your own effort. One has to do what they can, it's an obligation when we're given the freedom of choice. Liberty comes with the little cost that you do what you can do fulfill your idea of what's right.
On a side note, vegetarianism, when done properly, is most likely way more healthy than eating meat is for several reasons. The exception being wild meat I would guess.