Well, my scouting experience is decades ago, but I would say that usually it's younger kids who are in scouting. They join when they're 8 or 9 and think the scout promise and hand sign and all that is cool, stay in for a couple of years, and then often drop out once they get to middle school and high school where wearing a uniform isn't so cool anymore and there are music lessons, clubs, sports teams, musical ensembles, and so on that take up time after school. I imagine that's even more true nowadays when most moms work and don't have much time to lead scout troops, though there are now some troops that meet on weekends or in the evening.
As for scout camp, ours was a very dull day camp, not even tents overnight (a sore point with us) or even anything very outdoorsy like nature walks. People who wanted a real sleep-away camp went to private summer camp, though that was a lot more expensive.
We were also pretty much losers at earning badges all year -- the only knot we ever learned was a square knot. (Though we can all still recite that: left over right and around, right over left and around. *g*) We met at a nursing home and spent most of our time doing craft projects and singing campfire songs (without a campfire), e.g.,http://alumni.media.mit.edu/~kristin/songbook...http://alumni.media.mit.edu/~kristin/songbook...
and Christmas carols for the old people, that kind of thing. Though we did actually make our own cookies a couple of times. (Rice Krispies / marshmallow treats, probably.) But all that tends to depend on the individual troop and the adult leaders. And for older kids, it depends on the individual scout; a certain number of serious, self-motivated boys do manage to earn enough badges to become Eagle Scouts, and it's a definite plus on their college application.
Girl Scout cookies really aren't all that wonderful, nothing like homemade. It's just that everyone is familiar with them, they give you something to look forward to in February and a way to support kids doing something moderately community-spirited, and they do keep quite a long time in the fridge. (-;
OT @Tom AE: I thought the salmonella one was Peter Pan. But either way, peanut butter, bleah. (-;