Ayn Rand would tell you that, as a capable adult, you shouldn't depend on others more than you depend on yourself (meaning that you apply your mind to the world around you and the ideas that are offered to you, and you take responsibility for the role you play in the world and the happiness you get out of it) nor should you let other people who are capable adults depend on you more than they do themselves.
You claim as much as you want that "it is not being hermit living in the woods", but this sort of thing makes modern society completely impossible. People cannot live in the modern world without depending on others, even when it just comes to ideas.
Every mode of transport has traffic controllers we can't see, who can see things we can't and who have expertise we don't share, who judge things we cannot judge and whose orders we either follow without question or we will cause problems we don't foresee. That electronic light above the motorway telling you to slow down even though you personally can't see why; it is there for a reason.
Every building that uses modern architure demands from us that we suspend our personal judgement of whether it might be safe and forces us to simply accept without question that the architect knew what s/he was doing, and only very rarely does that unquestioning trust lead to disasterous consequences.
A modern society is simply too complex to understand, and the expertise people have too narrow and fragmented for anyone to be capable enough to depend on their own judgements more than on those of many others. People are not infinitely capable, and therefore the "capable adult" in your argument does not exist.
Not if they do it voluntarily.
A person can be altruistic voluntarily.
Communism did not and does not work. That means it does not achieve the goal it is supposed to.
The same is true for any other single political philosophy that has a description of how things ought to be. We live in a complex and dynamic reality in which nothing ever happens exactly according to plan.
The actual reasons why are a distraction from the current important points.
No, I think the actual reasons why communism failed to live up to its intentions are very important, because if they are the same reasons other political movements might fail it can serve as a lesson on how to avoid such a fate.
Communism once was claimed to be based on "reason" and promised a society of free voluntary exchange in which the needs of all were met and in which the State was minimal, perhaps even abolished. Sounds familiar, doesn't it?
Which would be nigh impossible in a nation of Objectivists.
It would be equally nigh impossible in a nation of Communists. But it would easily be possible in a more realistic nation in which some people don't actually follow the philosophy, but have learnt to use its rhetoric.
If a political philosophy is defended with "if everybody followed our philosophy it would totally work!" it has already failed.
A perfectly good reason never to trust any single person's judgements OVER YOUR OWN.
No, a perfectly good reason to never trust any single person's judgements
including your own. Just because judgements may be my own doesn't make them better than anyone else's; it is possible to fool oneself.
Irrelevant. No statement was made about why criminals commit crimes. The statement was about why non-criminals don't commit crimes.
Then it is a meaningless statement. If you want to explain why some people don't commit crimes, you'll have to include an explanation why other people do commit crimes. If your explanation for not commiting crimes is "being intelligent, thinking things through and crime not being in your personal self-interest" it is reasonable to assume you imply the opposite is true of those who do commit crime; if they are also intelligent, also think things through and crime is also not in their own personal self-interest, then these things fail to be an explanation for why some do not commit crime.
Figures that the thing I agree with Rand on happens to be the thing that is untrue. Maybe I am wrong too thinking that taxation should ideally be voluntary...
A statement based on multiple false premises.
Can you name some of the premises you think the statement is based on, and can you explain why you think they are wrong?