A lot of times I eat things on the "vegetarian" menu at restaurants and such, though I definitely do not exclude meat from my diet. It isn't a conscious thing so much as a preference thing. I love vegetables, a lot. I can eat vegetables all day. I don't know that it is.
I am a picky eater. I eat small quantities of pork and beef, but they are in my diet. At least 80% of the meat I eat is chicken, usually grilled.
I will not touch fish, or any other animal that lives in the water. It is simply not appealing to my palate at all. It's like eating roaches to me. The smell, texture, taste, and really everything else about seafood is totally unappealing to me no matter how it is cooked.
I eat a fair amount of bad, non-meat things like bread and cheese, but there's a ton a vegetables in there too. The cheese at least provides protein and some vitamins, though I probably do consume it in excess.
I am a healthy weight, but on the higher end (160-165, 5'9"), rarely get sick, and can eat like a horse. I probably should have some seafood in my diet as it can be healthy, but that won't happen because I find it to be disgusting.
I think it's the large vegetable intake that keeps me healthy, and the fact that a lot of the chicken I eat is grilled. Vegetarianism works if you are getting protein and doing the vege part. You need the vegetables (digestible nutrients) and protein. Without those things it's not a healthy lifestyle. I think a lot of people who call themselves vegetarians don't get enough vegetables and are trying to survive on nutrient poor foods, which isn't healthy at all.