I’ve not read it myself but I hear Forks over Knives is a solid read.
I'm vegan and it's for three reasons. First, what moral justification do you have to claim another’s life needlessly? They feel pain, think, have families, love, etc. We don't need meat to survive whatsoever. I believe as long as we eat meat we will never be civilized. Violence breeds violence. "The time will come when men such as I will look upon the murder of animals as they now look on the murder of men." - Leonardo da Vinci Second, the environment is decimated by factory farming. The UN released a statement saying factory farming is the NUMBER ONE contributor to global warming. Last it is insanely healthy for us to NOT consume meat. Check out the documentary Forks Over Knives. Heart disease, diabetes two major killers would be almost eradicated. "Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet." --Albert Einstein