I've finally admitted to myself that I don't like my father. Is this wrong?

After all these years I've finally managed to put it into words: my dad is a control freak and a bully. He used to hit me regularly but it was his emotional abuse that made my childhood miserable to the point that I used to hide in my room and fantasise that I was adopted and my real family would come and get me soon. I'm now 50 with 3 children, living on the other side of the world, and he is STILL trying to dictate my way of life to me. My mum is 84 and he dominates her completely, always has. She would never say a word against him or go against his orders. He is 83 and used to be a school principal, so he's used to unconditional obedience. I actually found it a huge relief to admit to myself (which I did the other day after one of his insulting, nasty emails) how much I dislike him. But should I ignore his controlling and bullying and carry on phoning and emailing him and my mum just because they're very old and won't be around forever? Or is it okay to just accept my feelings?