I'm going to cut off my dad because of what he did to a dog.
Do you plan to make ammends with your dad?
Of course not. He was always against me in everything.
While your parents can have a habit of getting on your nerves, it is important to know that they will always be in your life even if you decide to cut them off. Cutting them off seems more like a short term fix over any kind of long term one.
Sometimes it's just hard to forgive and forget.
Cutting your dad out of your life is a pretty drastic step, are you sure you can't try talking to him first? Life is easier when you have a good relationship with your parents, so it's worth it to try to work things out with him if it's possible.