Dude, join the club.
I'm a Jack of All Trades. Though I'm starting to master some computer-related things (and that will probably be my career: IT or computer engineering).
I share your interest in computers (obviously), nuclear physics (have read multiple nuclear physics/engineering books since 1990, took a class in it), astronomy/space.
About the only hobbies I haven't gotten into that I'd like to sometime are skydiving, bungee jumping, & firearms (particularly scope rifles).
Those are just the things I still pay attention to these days.
