Because, that's not been my experience.
I will simply point out that you're sounding like someone who will use the extreme examples as an excuse not to help the less extreme examples.
My experience has been, people who really don't want to be homeless find a way into housing of some kind, while people who are sorta antisocial or don't want help are the ones who end up on the street and stay there.
Ofcourse, all of these people like freezing to death. All of them choose to lose their jobs. They choose to experience a trauma. They choose to be anti-social when they've lost their whole family in a car-crash. Ofcourse it's all their fault, because everyone should be able to deal with everything like you would.
You want people to feel guilty like it's everyone's fault,
No, I just want people to know that not everyone chooses to be homeless, and that not every homeless person is a junkie, a psycho, anti-social, or an alcoholic. I know I can't save the whole world, and I know you can't save the whole world. I'm not telling anyone it's their fault.
but the truth is, the chronically homeless have to be the ones who say they are tired of living that way, they will make the changes necessary to find housing, even if it means changing their lifestyle.
They won't let you open a bank account when you have no address. They won't take you for a job when you have no address. Etcetera. It can be a vicious circle sometimes, no matter how smart, how motivated, or how much of a strong-willed person you are. I'm not blaming you or anyone else personally for the situation of these people.
:)