In this scenario, it'd be basically war between me and the parents here.
Back when I was a kid, I despised my mother. I mean, she did awful things to me growing up, deep physical and mental abuse. I mean like, tying me up to a chair with cables and beating the shit out of me because she was pissed at her parents kinda shit when I was 5 years old or younger.
By the time I was a teenager, I was crazier than her. And fearless - nothing to lose but my own life, which is shit anyway so I really don't care. A bullet would be mercy to me.
I waged war with her. I told her to fuck-off, that I'm *bigger than you now*, and thus you have two options - accept my individuality, or have the police come and arrest me and I don't think you have the balls. And even if she did, I'd promptly testify against her in court as well, with my father's blessing because he hates the bitch more than even I do. To this day he will not let her anywhere near his property.
She's one of those people just so goddamn awful that her own parents hate her and probably won't mourn her death. She blackmails her parents for money, she's burned down people's houses for pissing her off, she lashed out at my dad with a knife for upsetting her, she beat herself and told police my dad did it, she poked holes in the condom so she'd have me and have my dad for child support, and she brainwashed me growing up into believing it was "us vs the world" and beat the ever-loving snot out of me if I ever did anything to "betray" her.
Yeah... I can't understand people and the concept of "family" anymore even. Mine's a broken shit mess.
If I was in OPs position, I wouldn't hesitate to tell mommy and daddy to either fuck-off or get the cops to come and arrest me. "I despise you anyway, being taken away is *not* a punishment in my eyes".
But, that's just me. I've been raised to be absolutely scorched-earth with people like this.
I imagine how OP feels is different, and probably even incomprehensible to me. They probably still love their parents and don't want to live on without them.
Me on the otherhand. I don't. They can die for all I care.
Fundamentally different cases, I guess.