<p>I've been a vegetarian my whole life (parents were hippies) and I have to disagree with some of the stuff being said here. Especially "(the human body was not designed for vegetarianism)." Humans are definitely not carnivores--look at your teeth! Only a few (canines) are designed for eating meat, the majority are flat for grinding. Besides, unless you are a creationist, you can't say that humans were "meant" for anything; nature and evolution aren't means to an end.</p>
<p>The thing about vegetarians not getting enough protein is total BS. The average American gets 10X as much protein as they need, you will be fine as long as you eat a balanced died (fruits, veggies, grains, legumes, a little dairy if you aren't vegan). I have eaten meat only a few times in my 16 years and I've always been very healthy, never low on protein or iron or anything, and I certainly don't get sick any more than anyone else--probably less.</p>
<p>Studies have shown that vegetarians live, on average, 10 years longer than the general population. (I can't remember the source right now, but I wrote a paper about this last year and I could look it up.) Your risk of obesity and heart disease=down.
It's also better for the environment--much more energy/money/environmental damage in eating a cow than eating bread. For the cow, a field of grain or whatever must be grown for the cow to eat, then the cow has to be bred, probably in poor conditions, then killed, then processed. Soil erosion, nitrogen runoff, use of nonrenewable fuels, etc, you are doing a tiny little part to decrease these problems by not supporting the meat industry.
And then there's the issue of the horrible treatment animals receive. Lambs for veal, for example, are shoved in cages so small they cannot move, so as to kept their muscles soft, for their entire lives. Some people choose to support free-range/organic/humane companies rather than be vegetarian, and that is a good choice too.</p>
<p>All of these are equally good reasons to go vegetarian: health, environment, the inhumanity of the meat industry, personal taste. Whatever your reason(s), it's definitely a great way to live.</p>