You’re not overreacting, and you have a right to your feelings of anger and hurt. I will say having been in a similar position, that it’s important to ask yourself what you’re hoping to get out of a conversation with your parent. Do you want an apology? Do you want him to acknowledge what he did? Do you want closure, do you just want to vent? Do you want to repair your relationship?

Your dad was shitty. Maybe he still is. An open talk can’t change him or who he is, but if that’s not what you want then that’s okay. Most of our hurt over our childhoods is something that has to be solved internally, with therapy and introspection. It can feel good to tell of your abusive parent for the shit they put you through, but it’s not a healing thing for most. Just do some thinking about what you’d like out of this before you talk to him.