Outside, with other people building some tangible thing together. Something that years later we can point to and say yep, it was tough, but we did that.
Not only are we stuck with our heads stuck up computers, in 50 years everything we've done will be superceded by something vastly more cool and interesting. Within 100 years it'll all be gone.
There was an article on HN recently about video game addiction. You don't have to be addicted to video games to spend your entire life in front of a screen, being a slave to IM and email, and miss out on all of the important things.
ADD: Instead of 50 and 100 years, make that 20 and 40 years. We'll still be here when it all vanishes.