One of the former guitarists of thrash metal band Anthrax became a watch repairman. I think maybe he work(s/ed) on antique watches, but I might be making that part up. If you like working with your hands and challenging your mind, this could be great. I listened to a podcast miniseries about a guy who, among other things, repaired clocks. There was a lot of commentary about how reverse-engineering the original design was a big part of the job. (The show was S-Town / Shit-Town).