Yeah, whatever you do as a job, is eventually going to feel like a chore. I've told many folks that if you enjoy doing something,, don't do it as a job. I don't know many long time bike mechanics that enjoy doing it. For me, I like woodworking, or home repairs (specially HVAC) but I know I would be hating it in short order, if I did it as a job. Once I step away from the stand, I don't want to think of anything bike. It was years before anyone in one of the bike clubs I ride with knew I was a bike mechanic.