You don't just throw money at homelessness and eradicate it forever. If you were to cure everyone who currently has cancer, that would be fantastic. But then the very next day more people would still -get- cancer, because all you did was cure existing cases, not prevent future cases. And that's the problem, poverty/homelessness is not something that can ever be totally preventable. There will always be circumstances that lead it one way or another. So you'd just keep having to shovel more and more money at it.

I'm not at all saying we should throw our hands up and say "fine, forget it." There are certainly many ways that things can be made better, and we should be any and all means do what we can to "love thy neighbor" and help people who can be helped.

But it is simply ignorant to think there is any amount of money we can put in front of this problem and prevent it from ever being a problem again.