I happen to be a vegetarian, vegan actually, and have abstained from meat and animal products most of my life. I wouldn't call it a requirement for any spirituality but I certainly feel that is related to my concepts of nature-based faith and Druidry. Just because the ancients did something doesn't mean we should follow suit. Eating meat was more practical in the past for some populations, but if you do research you'll find that actually milk and cheese was a far more common staple to the ancients. Even the Vikings saw the practice of slaughtering animals for food as wasteful and had a diet rich in cheese supplemented with caught game and fish, but cheese was the main source of their protein.
When I meet people I usually don't tell them I'm a vegan. I also have Celiac Disease, so I can't eat wheat. So I can simply pass on many foods without making it a big issue. If asked I will talk about it though because being vegan makes me feel happy. It's amazing to me that plants produce fruits (we call some of them vegetables) that have seeds in them that are to be eaten to help their seeds spread. I think that's a unique relationship that we animals have as crucial to plant's survival thanks to the food they give us.
Anyhow. If anyone is interested there is a lot of research showing that we are not true omnivores and our bodies do much better health-wise on a plant-based diet. http://michaelbluejay.com/veg/natural.html
If nothing else meatless mondays are popular here in the states and a good way to add some variety to your diet without going full on vegetarian.
