I carry a 9mm SA/DA pistol or a 38Sp revolver. I could carry anything I want but those two rounds are about all I want to light off in many circumstances. I have fired both in enclosed spaces(for reasons I'd rather not disclose) and although they do ring your ears, it's not nearly as painful as a 357 mag or 40 S&W.
The other reason I don't pack a faster/louder boomer is my physical constraints. I have severe arthritis in my hands and loss of hand strength from spinal nerve damage. I carry what I can handle and am confident that they will do what I need done.