To keep it brief, I'm in my late 20s and my circle of friends have typically been indoor types that prefer to do things indoors, like watch movies, go out to eat, or play video games. Perhaps it's just my friend group, but I have this impression that people around my age can't be bothered to go /out/ beyond a mile or two long hike--and even then it's a struggle or just an excuse to smoke weed in a different setting. I can't imagine getting any of my friends to seriously gear up and go out on a camping trip where they have to carry their back to the campsite. Girls seem more into the idea, but in reality they'll just slow down my pace (well, a lot of guys would too).

Why do you guys think this is? We're in the best shape of our lives, somewhat, and it feels wasteful to spend it all indoors.