I don't believe that people choose to be homeless. They may make poor decisions, might be unable to make the right choices due to mental or emotional ailments or fall victim to circumstances beyond their control, but I don't think anybody says "Oh, look. There's a cardboard box. I want to live THERE."
I've been homeless. I demanded that the landlord fix a hole in the roof, they sued me for the damages, calling it tenant caused (which is rubbish), and they won. I was put out on the spot. That's how I lost custody of my children. I took them to their father rather than making them go with me to the homeless shelter. It took years to get them back from him.
I'm not posting a pity-me sob story for sympathy. My kids are grown and I've got grandchildren now. I'm simply saying that not every homeless person is a basket case, on drugs or drunk. Sometimes, bad things happen to decent people.
...okay. I might be a basket case, too. But you get the point.