He won't go to therapy and even if he did, don't expect him to change substantially in the next 10 years or so.

I don't know if I'd wish anyone well or assume such nice things like maybe they are going to therapy, if they had done enough terrible things.

In such a case my goal would only be, not be bitter and angry about the rest of the world. But stay angry about the terrible, immoral things committed, to keep up boundaries about such things in future. I don't mean the anger would have to be expressed (or if expressed it would have to be controlled enough), it's simply my own feeling inside, to protect me.

But that's me. Maybe you deal with these things differently. I agree, don't become bitter/angry about the whole world just because of him. To me, that's enough of a high road. Some people never get over their negativity from such experiences and will project them into other situations and people instead.