You're not the only person who has ever been through this by any means, it is not your fault that its happening. None of the other men who do this to women are good men either. Abusers tend to be clever and seek women who they don't think will put up much of a fight, or who they think they can manipulate (I.e someone who has been abused in the past). My husband and previous partners react perfectly well to being told no, and will happily cuddle or watch a movie or just lie beside me and read if it's what I want to do. You have just had a really shitty experience with men and it doesn't need to be like that.
Men can absolutely stop mid sex, I guarantee it won't cause him half the problems that all of this is causing you. It's the furthest thing from a compliment, it's a vile and degrading insult. A good man will stop, give you a cuddle and say nothing more about it as soon as he even feels like you're not 'into' it. He wouldn't even start in the first place!
I don't think they were trying to treat you like a child, I think they could see that you were being controlled by a monster and they had to put barriers in place to protect you, they were just fulfilling their duty of care, so don't be afraid to get help. I bet you look at the situation with your ex and think 'thank god I'm out of that'.
You're afraid of men because of what they've done to you, that's perfectly reasonable and I would 100% be the exact same in your position.
Don't give him the chance to do this again. Change the pin on your keysafe, tell your carers that you don't want him there. I know my opinion isn't worth much, but I would suggest taking a break from romantic relationships, you don't need one right now, instead focus on maybe joining a local or online support group and building friendships with other women.