Ok, so you give examples of what you think isn't fair about providing certain people healthcare: what about the folks who aren't smokers or drinkers or having gratuitous or unprotected sex? What about folks who have to decide whether they're going to continue to provide for their families or else get that super-expensive cancer / hiv / whatever else kind of treatment.
What about the people who aren't "at fault" for being sick?
"Life, Liberty, and the Pursuit of Happiness". As far as I'm concerned, healthcare is covered under "life".