They only cost you millions of dollars because you choose to offer state funded medical benefits to smokers. Personal responsibility, in my book, means just that: nobody else is going to foot the bill.
Like I said, your argument might be more valid if I could opt out of all these programs and smoke myself to death. Then, people who chose to participate in all of those expensive programs you mention would need to comply with requirements of participation.
That's always the deal: you get someone else to take care of you, but then you need to do what they say.
Well, you don't need to provide those social programs to people who are unwilling to comply with your requirements. The only problem is that I'm unable to opt out. You (not you personally, but the society) object to spending millions on services that I don't want, and then use it as an excuse to control my behavior. That doesn't make any sense!