It does matter, though. Meat, dairy, and eggs supply a lot of vital vitamins and nutrients, so you can’t just cut those without having a viable replacement plan. You can kill yourself by going vegan if you don’t supplement your vitamin D and B12, as well as your calcium, iron, and protein intake. By all means, go vegan, just think about what your body needs and what you need to do to replace that in a vegan diet.