There is no system under which nobody will be homeless, unless some people are kept inside by force. We can reduce homelessness, but if we don't stop until there is ZERO then we will have gone far into the realm of cutting people's rights down so much they can't screw their own lives up.

I hate that this is true, but we don't benefit from pretending (or legitimately believing) that it isn't.

In order to have a world where people can determine their own destiny, ie in order to have a world with freedom, we must allow people to destroy themselves.

The system is badly rigged and unfair, but even the perfect system will still have some homeless people.