Vessol, I am very glad that you are choosing 'The Non-Aggression Principle Diet'. I'm glad to hear you chose the Non-Aggression Principle Diet too, Bryan! +rep to both! Applying the non-aggression principle (a principle which I firmly believe originates from ancient religion, and is known as ahimsa in Sanskrit) is quite a liberating experience -- especially karmicly, and spiritually. I don't consider eggs to be vegetarian (though dairy is), but it's a step closer towards it.
I do not understand why The Non-Aggression Principle Diet so often attracts unwarranted attacks from those who do not follow or understand it, but don't let it bother you! I tend to dislike discussing the subject because people often baselessly attack the idea that humans can be just as healthy without flesh, but if it can be discussed civilly without attacks, that would be enjoyable. There is a nice informative book called "You Don't Need Meat", and another titled "The China Study" which show how meat is purely optional, and never a nutritional requirement for any human of any blood type. DISCLAIMER: I am not saying it is wrong or less healthy to eat meat, feel free to eat meat if you desire, but just realize that is not eaten for health reasons -- it is eaten purely for the taste preference and that's fine, but it is important to understand that there is nothing in meat that the human body requires that is not easily found in plants or milk. Anyway, arguing against the vegetarian diet in a thread about becoming vegetarian is a distraction from the topic, and is off topic. It would be nice to stay on topic.
Anyway, back on topic -- the non-aggression principle, or ahimsa, applies to all living entities. It is easier to realize this from a religious or spiritual understanding, which I believe involves a more full and detailed understanding of the ethics or karma behind applying the non-aggression principle to one's every action and diet. The spirit/soul is what animates the body with life; without spirit/soul, a body would be a dead, lifeless lump of flesh. The same kind of spirit/soul that animates humans, animates all other living entities in the same way, thus compassion for all living entities and not just for other humans makes sense in a religious or spiritual context. This is explained nicely in the following verse:
It goes deeper still, into spiritual philosophy, which is explained nicely by the Vedas. All religions can appreciate the non-aggression principle, and the diet which results from following it. Though it is more clearly expounded upon in some religions more than others, the essence of the instruction is there in all.