KW,
Life is a strange Journey.
One of the things I have learned is this: we can not make people into what we want them to be: family members included. I hope, at some point in the future, your Dad realizes he has a Son: a very special person and that he should have treated you as the special one you are. And, when that time comes, if it does...we can only hope....I hope you are able to let the past go and start at that point with him. You may only have a few days or years, and, yes, there will be scars, however, it might be worth the effort.
Wishing you and your Dad the best,
Yours in this Journey,
V