Today I did some reading up on advantages of vegetarianism, and came across some pretty compelling arguments. The main points that appealed to me:

1. Our small intestines are really long compared to that of other animals that eat meat, and meat is never digested in the small intestine, only fibrous food(read vegetarian food) is.
2. Our digestive juices(starting with the saliva down to the gastric juices) are apparently alkali-based, unlike that of our carnivorous friends in the animal kingdom which are acid-based. And meats require strong acid to be digested.
3. Coronary heart disease is unheard of in carnivorous animal species, whereas humans suffer a lot from it(even vegetarians do, but humans eat out of greed, not out of hunger, so that must be a common illness for all humans irrespective of their diets).

A more complete list can be found here:
http://www.celestialhealing.net/physicalveg3.htm

Being a vegetarian myself(I do consume milk products), I don't have much trouble agreeing with all this. Ethically, I feel we have only one issue: that of consumption of resources. One chicken, or one cow, consumes a lot of grains and fresh water before it can be consumed by us. I think in the interests of leaving a smaller ecological footprint, we must become vegetarians to the extent possible.

As Mahatma Gandhi said, "There is enough for everybody's need, but not enough for anybody's greed".