No you shouldn't have to pay for anything related to my health or the health of my family.  That's my whole point.  All of us should be responsible for our own health decisions.  Insurance should be for catastrophic events and be priced based on health factors like smoking, obesity, family history, diet.  I know some people won't think that is fair, but I don't want to be responsible other people's bad decisions, and I don't expect them to be responsible for mine.