Re: i'm evil
I know many will disagree, but I must say you sound to be suffering from depression. Some people have less or zero seratonin(the chemical that makes you feel good) running around their brains than the normal amount, which MAY explain your dad's issues and alcoholism.
The questions you pose are extremely complicated, getting right to the essence of life. But you can't make good decisions while under the influence of apparently life-long depression.
Again, others may disagree, but I would suggest you either have your brain chemistry tested, or just assume it's short on seratonin and try taking natural seratonin like "5-htp" and/or "l-tryptophan" from health food stores. If you do have a deficiency, it will change your life!
I stopped believing psychology is the be-all, end-all of human suffering. More is biological than we used to know about. Good luck.