It's been said that "everyone has a story".
I believe this to be true of every homeless person. One of the difficulties we have as a society with addressing the homeless situation is we cannot protect people from doing things that aren't in their best interest!
Some people have chosen drugs, alcohol, or criminal activities which have (alienated them from family and friends) or cost them employment. Just about every honest (decent person) knows of someone who would allow them to sleep on their sofa or floor until they got on their feet if they were to ask.
You'd be surprised at how many people are unaware they have a family member who is living homeless somewhere. Pride is silent.
Others have mental disorders but refuse to take medication and would rather be "free on the streets" than inside an institution. We can't force someone to commit them self.
There are others who simply are unaware of government and non-for profit organizations that offer programs to assist the homeless. Many people don't like being told what to do or being held accountable.
Long ago I was at a bus stop and overheard two homeless guys talking. One was talking about going to a missionary for dinner and the other said he was going to skip that because: "They won't feed you until after you attend an one hour prayer service!"
The (something for nothing) mentality guarantees poverty.
Lastly there are what I call short-term homeless people. These are people who have family they could move in with but have chosen to sleep in their car instead to (pursue their dreams). Tyler Perry, Jim Carrey, Kelly Clarkson, and Steve Harvey are a few examples. Jennifer Lopez stated her mother kicked her out of the house because she didn't want to go to college and was fixated on becoming a dancer. She slept on cots in the studio.
In the 2005 commencement address at Stanford University, Steve Jobs said, “I didn’t have a dorm room, so I slept on the floor in friends’ rooms, I returned coke bottles for the 5¢ deposits to buy food with, and I would walk the 7 miles across town every Sunday night to get one good meal a week at the Hare Krishna temple.”
Being homeless doesn't have to be a permanent condition. Only the individual can change their mindset and take the necessary steps.