That’s why one can only do good works at a bit of a distance.
I read about a guy that allowed somebody to stay at his place with his girlfriend. The guest started hitting on his girlfriend and the guy threw him out. The guest came back with a gun and killed the girlfriend and the guest shot the guy in the head four times, but he survived with extensive brain damage. His parents had to become caretakers for the rest of their lives.
when I was growing up, we had a constant stream of down on their luck friends staying at our house while they straightened their lives out. Most did great except the alcoholics. One of my moms old friends went wild while parents were on vacation and literally drank up our entire very sizable booze cabinet. Amazing she could even live through that. It was different back then - good people going through tough times. Today, it’s more dirt bag parasites living off of the government as a lifestyle choice.