Some people prefer to be homeless. It's a burden free life not having to worry about working to pay all the bills that go with home ownership.
Then there are those who are forced into the wide open spaces through no fault of their own.
There are reasonable solutions available to assist the less fortunate that would keep them out of the parks and still provide a modicum of freedom and a place where good Samaritans can feed them to their heart's content.
All that would be needed is a large unused lot and some shipping containers.
Many of them are unemployable for the simple reason of having no permanent address.