Was I right to cut my brother out of my life?

My brother is a drug addict. He’s been in and out of jail most of his life for all kinds of crimes like possession, unlawfully carrying a gun (convicted felon), domestic battery, dealing, theft, possession of stolen property, etc.

Over the years, our parents have shelled out all kinds of money to help him & bail him out of jail and even to get back home to our state when he was living in another state. I’ve tried myself to help him but I refused to let him live with us of course. When I was working for social services, I offered to help him get on food stamps, find housing, and get his Medicaid back up and going. He has 4 children. One doesn’t live here and the other 3 are into adulthood now. He has done nothing but disappoint his kids and his family by either never showing up or putting himself in situations to get locked up. I believe he now has schizophrenia based upon our last conversations (always thinks he’s being followed and that his ex girlfriend is out to kill him…supposedly got a large life insurance policy on him, etc.

I’ve gotten to a point that since he’s refusing to listen to his family and still putting himself in bad situations, I no longer want a relationship with him. It’s not a huge deal but he didn’t even bother to tell me congratulations when I got married or wished me a happy birthday despite everything our family has done for him in the past.

Should I feel guilty for basically disowning him? Would you still try to pursue that relationship?