This document argues that vegetarianism and veganism align with principles of major world religions by advocating for compassion and non-violence towards animals. It asserts that animal agriculture causes unnecessary suffering and death given that vegetarian diets can sustain human health. Expanding moral considerations to include animals follows a universal "golden rule" of treating others as you wish to be treated. As religions have evolved over time to become more inclusive, incorporating vegan and vegetarian ethics could be a next step towards greater compassion.