Kids these days do not have much unstructured time. They are in sports, band, clubs, and various activities at each level. The 16-17 year olds have jobs and cars, and perhaps you have noticed the 2-3 hours of homework every night.
Scouting is not so much a demanding activity; just one night a week and one weekend a month. Many parents provide their kids with balance to include all of these opportunities. It is stressful, but doable. The activities and time pressures are the excuse, not the reason to quit or avoid scouting.
The real reason as I see it: just the look on the parents'