First, you responded as if I support Social Security which implies that you didn't bother to read my post in detail and/or didn't understand it.
(1) That's an answer. Ok. I didn't even bother to look at your reasoning because I agree.
(2) This is not an answer. You've decided to answer a completely unrelated question to the one I posed. The question was: How will these problems be solved if not by Social security? "People must not be robbed...Free people should take care of themselves" are not answers to these. The point is that "taking care of yourself" is not a good situation. You can be ruined by disaster in or out of your control. Which leads to question three, Do you want to live in a society who tosses the unlucky aside to die on the side of the road? Even taking a stronger survival of the fittest (animal) approach there are situations where these problems are completely unrelated to the individual, their choices and preparation. Just concentrating on that situation, do you want to live in a society which leaves the unlucky to die?
(3) This is also an answer. Here's a follow up question: Why do you live in a mixed market country that provides social services? Move to a country that doesn't enforce regulation or collective programs... like... like... like where? I know of no "opt in" governments where you can pick and choose what laws/programs to abide by. I also don't see how such a system would be different from anarchy. If you want anarchy you could go to an uninhabited island somewhere. Or Somalia maybe.
If your chief concern is freedom. Live out in the woods. Farm. You can do anything you want. Complete freedom.
Obviously this isn't what you want. My point is that you can't just yell about freedom without reason. If you want all the benefits of society you have to have a government and that government's power can't be based on your personal agreement to it's programs.
Also I'd like to know what your opinion would be if your house burned down, you were laid off, all your investments vanished and you were diagnosed with cancer all in one week. Sure, it's ridiculously unlikely. But vaguely possible. Certainly one of those things could happen any day now. Would you still be so averse to all these programs that would help you?
You can go ahead and say you'd still rather be in such a country and that you would starve on the street and be happy to live in a free country. But I don't think you really would. I think you'd be angry at a society that abandoned you despite you doing your best.