I tend to eat little meat because it's expensive and inconvenient but anti-meatism is something that I turn my nose at. The only thing I hate more is the organic food movement. That and bad feelings about the seal hunt.
I don't see the moral issue in meat eating. Slaughter is quick; there are certainly animals in the wild, and people in society, dying much more difficult deaths. Domesticated animals may not enjoy the freedom of their ancestral stock but they don't know the difference and I doubt that it pains them any. Having worked in hog barns, I have seen many a happy pig.
One thing that does concern me is the environmental cost. Raising animals is not just financially expensive and I'm not sure that the cost of meat has all the externalities built into it.
I tend to eat a lot of fish, especially small, oily fish, and for the most part I think that circumvents most of the environmental issue. Sardine, capelin, herring and other small fish fisheries are sustainable and don't carry the same costs of production that agricultural meats do. Relatively low contamination, great taste. I also eat a lot of tilapia.
That said, I have gone long stretches with very little in the way of animal products. Even substituting with legumes for protein, I've noticed a gradual decline in mood. I get lethargic. Maybe it's a deficit of B vitamines, maybe it's choline, maybe it's certain essential amino acids or maybe it's just that these times also happen to be times when I'm neglecting my diet in general. All the same, I don't think that I'm eating properly unless I'm having a good serving of fish/meat at least every other day.
Also, vegetarianism that includes eggs and dairy? WTF? I don't see how percieved moral issues might allow someone to eat eggs and dairy but not meat. What do you think happens to retired laying hens? They don't wile away their autumn years in a villa. And the captive conditions while they're in production aren't animal-freindly-people friendly, either.