I agree with that, and we're a rather specialized board. At least in my case, translation and emulation wasn't a hobby I picked up after I blew out my knee trying out for the football team
The only way you're getting me anywhere near a gym is if the words Pokemon are in the title... That's not really true but it sounded fantastic in my mind.
I think the question is a bit loaded too, because I highly doubt any of us are complete shut-ins, it's just that the activities that we find most enjoyable are things that are more comfortable to do indoors. I live in a tiny town (actually a village) but there's a lot of things to do if I sought them out, but I don't. I do like going hiking, and shooting, and working on random projects, but even that's all done with close friends/family.