Most vegans I've met are "mostly vegan". Occasionally eating meat is not a big deal. The problems start when they're the main part of your diet - you start incr

Most vegans I've met are "mostly vegan". Occasionally eating meat is not a big deal. The problems start when they're the main part of your diet - you start increasing your disk of heart disease, diabetes, colon cancer, etc while also perpetuating environmental degredation. All very costly to society.