[Nonpareil]

As long as I don't have to co-sign on a lease with him being broke and having a suspect personality and work ethic, I'd do whatever was in my means.

Let him twist in the wind and stay at home, it'll force him to get his shit together. If you get a place with him (and his no money, no job and suspect personality), it's not going to be 'if his problems become my problems', it'll be 'when his problems become my problems.'