Many people have and do successfullyNot meI don't think it's intrinsically more healthy ..I also think it curtails your social life when you're in the going out for dinner or round to people's houses for food stage ...cos vegans are a pain in the ass to cater for ...we generally even avoid inviting vegetarians unless making things like Indian or Greek cos otherwise it's a whole other menuI also can't shake the feeling that vegans are kind of uptight and it properly extends to other parts of their life (which is bull)