Homelessness can happen, although hardly to anyone/everyone. About fifty/fifty five years ago a friend of my late sister was evicted for non-payment of rent. He was, at that point, homeless, but he didn't end up on the street - he dossed with friends (not us - couldn't stand the man) until he was able to sort things out, but I suppose if he hadn't had helpful friends he could well have ended up on the street, although as he still had a job, hopefully not for long
Mike