my dad was an alcoholic and suffered with a few mental health issues. He was an eccentric man who had a violent temper. He was a good man though, but it took me a few years of therapy and understanding to come to realize that. I feel blessed by God that I was able to resolve most of my issues with him before he died about 6 years ago. He was complex and, like his "bad" issues, he had a lot of qualities and love too.
I suppose I would also say that his behavior was his alone and not mine. Tough to accept that as a kid, but I could deal with it much better as an adult.