And how many of us got introduced to camping / backpacking through Scouting? I did. I gotta think an inner-city (or poor, rural white area) has less time and money available in families to allow volunteering, financing far-flung trips, and acquiring gear for BPing.
It is not just “poor”.
Most working class families (whatever that means in 2016) tend to work overtime on weekends and/or a second job. The other spouse tends to work optimized hours so day care is not an expense. And day care is often avoided for cultural reasons, too. Certain socio-economic and cultural groups have the view that day care means someone else is raising their children…and that is not going to happen.
So the commodity of time is not there to spend on outdoor trips and exposing the children to the outdoors. A weekend of camping means gas money spent, food purchased, gear purchased that is money spent that could go to something else and TIME spent that could be used to work a Saturday shift and earning time-and-half pay.
Any time off and vacations is usually for house projects, family functions and perhaps the Sunday off when there is no overtime. The one day off to rest and a enjoy family dinners perhaps.
That is why something such as Scouts, Big City Mountaineers and other non-profits are good thing: It exposed children to something they normally would not see through their family background.
However, as Nick said, outdoor recreation is still usually the realm of affluent and typically college educated consumers.
There may be cultural reasons that is closely related as Dave alluded to as well.
People who grew up with parents who were on their feet all day don’t typically view physical activity as something to do for fun. :) Unless, of course they are lucky enough to get introduced to it at young age and a spark is lit.
If a person was introduced to the outdoors at a young age, and then later have the time and economic resources as they get older, they just might spend time recreating in the outdoors as leisure activity in future years…