Re: Ron Paul's vision fer old peoples and children...
The purist libertarian view is not, as many would tell it, that we should "let them die". But it does object to the modern assumption that society and government are the same thing. In our view, we should resist the temptation to turn government into our caretaker. We can, and should, take care of each other and promote compassionate society. But it is wrong to legislate such compassion, and it strips us of our humanity when we do.
That said, Ron Paul is NOT a purist libertarian. He's made the point repeatedly on the campaign stump that we could fully fund all of our safety nets if we pulled back our military to focus on actual defense rather than empire building. Ending the welfare state is simply not his highest priority. On top of that, (as you've pointed out before) he can't simply abolish these things as president even if he wanted to. If and when we do get government out of the caretaker business it will be because there is widespread consensus that we should.
"The human race divides politically into those who want people to be controlled and those who have no such desire. The former are idealists acting from highest motives for the greatest good of the greatest number. The latter are surly curmudgeons, suspicious and lacking in altruism. But they are more comfortable neighbors than the other sort." -- Robert E. Heinlein