I can't speak for 42, because he obviously doesn't know how weed affects the body, but I think it's justifiable to deprive lazy, self-destructive people from medical care, even if I do end up paying more for my own health needs. Society as a whole would benefit if the notion that "it's okay to be fat/lazy/promiscuous/etc" was erased. Being a fat, lazy, unsafe, asshole should have no benefits to it whatsoever. But a socialist style medicare system pretty much says "hey even if you don't take care of yourself you'll be treated anyway, so there's no reason for you to work hard, eat healthy, and stay away from drugs."