I know you're just venting.. since I haven't seen ya around in a while.. I'll give this a shot..
Firstly, some one wise somewhere told me that hate is a usless emotion, and turned inward will fuck up your judgement, how you see you self and others. Ok, so daddy's a prick.. the best thing you can do is show support for you mom, and do everything you can to help her out.
Secondly, you shouldn't ever really hate a parent. Its ok to lose respect for ones parent(s), it happens all the time, but the truth of the matter is he is responsible for your existence, and you seem like pretty well rounded, educated woman from what I know of you, maybe a little hyper sometimes but hey, we all have our problems (pointing finger at self now). At one point he must have cared for you, provided for you, thats a big thing because who else ever cared for you when you couldn't have done it yourself.
Now, I know you are just venting, and thats totally cool, but dont fool yourself into thinking your fathers life is completely worthless.. Besides your brothers & sisters (if you have any) and mother, your father is your closest living relative. Later in life family becomes much more important especially once you have children of your own.
I do however think you SHOULD talk to your dad about why you feel like you do, what he has done to wrong you, and what you would like to see him do differently. Im sure, as the the sky is blue, a father would never mean to hurt his daughter on purpose.. Maybe he has some issues, maybe he has a lot.. He could have some big things he needs to work on himself.. But, its worth letting him know that.. a father will always be his daughters best friend.. Especially when his daughter is such a great kid.. like you.