are vegetarians more ethical by not eating meat?

[genkaus]

The most common argument I see against vegetarianism here seems to be that since humanity has evolved to be be omnivores, sticking to a vegetarian diet is unhealthy. And frankly, I don't buy that. Growing up in a country where vegetarianism is a religious requirement, it's easy to see that that is not true. Most of my extended family is vegetarian - especially my grandparents' generation and most of them have active lifestyles while being over 90. A few of my close friends are vegetarian as well and they most certainly are healthier than me. While I don't regard as their being any moral issues associated with eating meat, nonetheless I also don't see necessity as a valid excuse.