No. We evolved into omnivores for a reason.
Look, it's one thing to say you really like animal products so you eat them, but don't try and imply that we somehow need to eat animal products to survive. If you think so, please link me to the relevant research that brought you to that conclusion. And I don't mean to pick on you, since it looks like almost everyone else is saying the same thing. Hmm, maybe I need to reconsider my support for universal healthcare.
I admit I am weak. I will eat animal products at least a few times a week, if not more. But I think research has shown that an animal-free diet leads to better health. It is better than any pill. So I try and bake vegetables (frying them leads to a loss of nutrition) with some spices and eat it along with Dal (pulses, split peas etc cooked Indian style) and some whole grain roti or brown rice. If you consistently eat that diet, you will lose weight guaranteed and you will be healthier overall.