Well, i was pretty rebellious as a teen, and I do remember why. It was because everyone constantly for a decade expected me to conform to their expectations, both in school and in home, while in the same time, no one showed any sign or interest whatsoever in changing their behavior based on my feedback. Like, i should respect their feedback, but when i attempt to provide feedback about how my parents' performan their role as parents or my teachers' perform their role as education providers, i would be punished and verbally abused in return. So resentment towards those people who provided me negative feedback without any respect of curiosity for my feedback began to build up. The relationship was completely one-sided in its nature, and I found that to be unjust to the core. And I felt angry and resentful and sad about the one-sided nature of the relationship, i felt it to be deeply unjust that they impose behavioral standards on me that they show no willingness to apply to themselves. So what happened is that when as a teen i realized that i am no longer small and no longer utterly dependent, and i gained the ability to actually express this built-up anger in a direct manner, I no longer needed to contain it all in myself.
So my one-sided relationship with my parents merely became mutual and two-sided. The same way they rejected my criticisms and my feedback about them and reacted to it with verbal abuse, I began to react to their feedback and criticism with verbal abuse aswell. It was really all about the patterns they were setting into motion. The only reason i was a ,,good child" before was that i was unable to confront them and also unable to leave them. But when i grew older, and I was finally able to do both of these, I did.
If my parents would have been curious of my opinion and really had a desire to meet my needs, moreover, would have showed any willingness to modify their behavior based on my wishes and feedback, I would have done the same to them - even as a teen. But they didnt care about me, so I didin't care about them either.