Do you have a 'study' in your home?

Kinda? It was supposed to be a bedroom (one we need tbfh, my brothers are 19 and 24 and they share a room, I hear stories about the gross things they each do all the time) But my dad wanted the room for his study, then it turned into a music practice room when we played instruments, then it turned into storage, then it was emptied when the ceiling fell in there, and now it's my dad's project room (he painted it and built a bookshelf and is working on building a gun cabinet in there)

So at one point it was a study