Have a very honest conversation with them. My parents did this to me when I was 15. I have always been a very private person and my brother always had friends over so I immediately hung a blanket up in the doorway. My mother interpreted this action as "accepting my punishment and adjusting to a new reality." I had been living with anxiety and depression for a long time without knowing what it was (it wasn't as publicly discussed as it is now) so when my mother would yell at me for misbehaving I would run to my room and close the door. She didn't like yelling at a closed door so the door came off. My room, with a door, was my only safe place I had in the world and it was taken away from me. It is not an exaggeration to say that I was traumatized. I started hiding in my closet since it still had a door and I stopped talking to my parents. I didn't get into trouble anymore or argue with my mother anymore so my parents saw this as a success but I was in hell. I eventually got the door back "after learning my lesson" but my relationship with my parents was forever altered. I lost my trust in them to keep me safe. Almost 30 years later and I still haven't found a way to forgive them. I understand why they did it, but they obviously didn't take into consideration the impact it would have on a teenager who desperately needed their privacy. I don't know how your mental health is - it seems like you're in a better headspace than I was so talk to them and be as honest as you possibly can. You are not bargaining for a door back, you are telling them how their actions are effecting you. They've taken away your privacy when you need it the most. "Gotten used to it" sounds like your dad is too lazy to put the door back up. You're uncomfortable in your own home, a place where you should feel safe and secure. I'm sorry this is happening to you... I hope you come out on the other end of it better than I did.