Not typically.
There is a homeless man that I see regularly outside of one of the buildings where I work. Due to a local board I sit on, he recognizes me. I know he is a stone alcoholic with a family that would take him in, but he WANTS to live on the streets.
With that being said, I buy him Chinese food or a sandwich from the deli on the regular, because he is an awfully nice guy, if a bit unstable.