Ive never really thought about it
Comming from an indoorsy sort of family (the sort who think the grimmest part of scotland is `beautiful`) my grandfather took me out a lot, I presume because he discovered that the outdoors was a capital way to amuse a toddler.
Only in adult life have I discovered canvas (when a child we had a caravan. 5 people in a caravan on a wet day is no joke, but we loved it) but I like it, tent life is so carefree, (unlike a caravan which though it has the advantages of home, needs a lot of fiddling with) you can sit up all night and get up as you please, eat when you like (and what you like, more to the point) its so laid back.
Modern technology can bring the computer/tv/books/dvds/games outdoors if you so wish