I think I hate my Father.

I need to vent. I hate my Dad. I'm 28, and hes turning 50 this year. My parents divorced when I was 8, and they had joint custody. Whenever I went to spend time with my dad he pawned me off on my grandparents so he could party. When I was 14, I moved in with my dad full time to be closer to my high school. He treated me horribly, grounded for silly things. I had to do every single chore in the house while maintaining straight As, including folding his laundry. He was fairly single most of the time up until I was about 17/18. He then met this woman, with 7 kids from her previous marriage. My family comes from money, so that was clearly her interest based on her previous husband and last few relationships (all were wealthier). She seemed alright at first, but consistently got worse as time went on. During this time, he also drained the college fund my great grandparents had for me. He promised to pay my student loans he had for me when I did go to college, but the women convinced him to do otherwise once they married, leaving me with a lot of debt. On my 20th birthday, she and her kids moved in, he completely forgot my birthday and never acknowledged it til about a week later. When I went away to college, he promised I'd still have a bedroom when I came home. Came home for winter break and all my things had been moved out and painted over, so her daughter could have it. Leaving me to the couch. I moved out shortly after. His wife has gotten increasingly crazy over the years. She's an alcoholic. She also treated me like Cinderella when I lived there. Her kids did nothing while i did everything. I love her two oldest kids however, because they see through her bullshit. The three of us are close. I never get invited to anything anymore. I got married and they could care less. My stepmonster also cannot hold a job for drinking and stealing at work and relies on my dad for everything. She states she has PTSD and consistently uses it as an excuse. She has stolen anxiety medication from me. It's gotten to a point that I hate my father because of her. i hate her. I wish they would both just disappear. He's acted like more of a fatherto her kids than me. Even though I'm his only biological child. it's like i don't matter or exist and I hate it.