I'm sure this is a common fear among those who have hurt others in the past, as well as those who have witnessed hurt. But in the time I've gotten to know you, Jon, I think I've learned enough to say one thing for sure:
You are better than your father.
You're showing right now, with your concern for others, that you're capable of avoiding what you described. If you remain loyal to your friends, love your kids, and enter a loving relationship with someone you really care about- and someone you feel that you can care about always- you will not let them down.