My hobbies evolved over time --
mid teens - mid 20's : hotrodding / building cars
mid 20s - mid 50s : hotrodding computer hardware and software, photography, martial arts (practiced itf style tkd, but interests in other asian disciplines)
mid 50s - current : retired - emulating computer game servers, developing specialized compiling and re-sourcing tools and such, helping out the owner of my old tkd club (a close friend), trololololing these forums & pissing off the kiddies