Oh boy - here is an excellent Point of Inquiry interview, Vegetarianism and Secular Ethics, with philosopher, Peter Singer - and he is quite convincing about the case for adopting vegetarianism The best thing about the interview is his discussion of religion regarding some of these ethical questions. At one point he also talks about the early Christian ideas of "personhood" and how it related to the doctrine of Trinity. Good stuff!
Now, I will be in Pakistan next month during Eid ul Adha - the Muslim festival of animal sacrifice (I think its around Dec 8th). The last time I was there for Eid al Adha was at least 15 years ago. I do vividly remember some of the goat sacrifices while growing up, but I think it will be hard to stomach it this time. But I'm not a vegetarian - so yes, my position regarding this is definitely inconsistent.
If you have 25 minutes, do check out this interview - its totally worth it. Also - you can check out the first part, Ethics in the age of Darwin.