I'm as geeky as they come. Most of a Ph.D. in theoretical physics, and have spent over a decade working in high-performance computing.
When I was 7 years old, I was wandering through the woods, looking under rocks for creepy crawlies, playing hide-and-seek, and playing baseball with my brother and cousins. Not only did it *not* set me back in anyway, but it is some of my fondest memories of being a child.
Let kids be kids for goodness sake. Take him to a science museum, and let *him* tell *you* what interests you. When I was a kid and hyped about computers, my dad thought computers were a fad only used to play Pac-Man. Not only do I have a good-paying career, but any time dad can't connect to the internet, I get an emergency telephone call.
Let your child steer his future. He's the one who has to live it.