Speaking directly to the libertarian aspect of your assertion, what you've described is a libertine. Libertarians, that is small "l" libertarians, hold forth that a person should be allowed to do what they want and when they want up until the point that it impacts other people's rights negatively, be it their property rights, personal being rights or economic rights, which are often so intermingled together that it can be tough to seperate them. Thus most libertarians will place restrictions upon a person's liberties with those ideal as the foundation. At the same time, increased liberty also requires the commensurate personal responsibility. You want to smoke? Fine, smoke away where you're not going to impact others without their leave, but then you need to own up to the consequences of your actions. If you're too poor to pay the piper for the cancer treatment, then you shouldn't have chosen to smoke; if your friends, family and even strangers want to help you pay for the treatments through charity, then that's their perogative, but it shouldn't be a task required through government dictate (Medicaid transfer payments). Ultimatley, your reap what you sow.
Libertines are selfish children, often times anarchists, and should not be confused for anything else.
