Both parents addicted to various drugs throughout my childhood. They were married until I was 6, divorced, went with mother. Mother became addicted to prescription meds early in my childhood (7-8). Went through a number of boyfriends/husbands, one was abusive to me between ages 9-12. I raised myself and my two sisters as the husband left and mother faded away. Groceries were scarce, mother was an RN but spent all of our money on extra drugs. I had a paper route when I was 13-15, used the profits to pay for the school programs that my mother would always say she'd pay for but never really would. Used excess to pay for food for a few months until my grandmother found out how bad it really was, and then she came to live with us. Mother got in serious trouble around age 15, went to prison for 3 years.
Father, during this time, was addicted to Meth. We stayed with him in the summers, but I hated being around him so I stayed with (the other) grandmother 95% of the time. My sisters, thankfully, were too young to see this part of him (and as a result, still have a relationship with him). His addiction became much worse over the years, and he ended up in prison around the same time my mother did. I lived in my father's rental house alone for 6 months, rarely went to school, got in a massive amount of trouble with the state. Grandmother tried all she could to raise me, but she was old and sick, and I was past the point of caring. I lived between a couple friends houses and once or twice a week, at my grandmothers house, throughout Sophomore and Junior years. I had an IT job that I worked a few hours a day, which paid for my gas and food. Father got out of prison when I was 17. He got in trouble with the mob through his then-girlfriend and his drug habit (being serious here), left town for two years, and I didn't talk to him much for another 5 years or so. Mother got out of prison shortly thereafter, decided she actually wanted to be a mother for my sisters (tried for me also, but it was much too late by then), and offered me a place to stay. I lived between mother's residence and friends houses for senior year. I was done with school due to testing out of everything day 1 of senior year, but I was required to attend school of some sort until I was 18, so I lied a lot and found a teacher that didn't give a s**t - he let me be his aide 8 periods of the day. I left town a lot, ignored parents, got in a lot of trouble, withdrew into my aspergerian nightmare that I've lived in ever since (obviously didn't know at the time), and waited out the highschool experience without parental guidance.
Strangely enough, I have developed a sort of relationship with my mother since I've become an adult. I guess I've forgiven her a bit, since she did try to raise my sisters properly after her release (though one was too far gone and has totally f****d her life up now). My father will never be my father - he can be grandpa to my children, but he lost his right to be my father a long time ago. I scraped him off the ground, bleeding, after a U-Haul fell over on him off of a jack (he is a mechanic) - he was trying to unload it in his shop while he was whacked out of his mind on meth... bad things happened. He stopped being my father that night.