Mostly my mother, but my father has also done things to earn my antipathy.
The two hellish years I lived with my father: all I can pretty much remember is him calling me a moron. My memories are what i'd think PTSD would be like -- they just keep getting worse. Anyway, it was back when my dyslexia hadn't been diagnosed yet, in my intermediate years. How I feel: nothing I can say would do it justice.
No, I don't despise my mother and father. While being a teen was tough at times, they taught me all the life lessons I needed to know.