It's not clear to me that skydiving is an optimal activity for those with a casual attitude towards it and who do not maintain a high degree of currency.
Perhaps that was presented in the wrong way. A casual attitude is by far the way I approach this sport. My point was merely that not everyone who jumps is completely obsessed with it or is out there all day every weekend. I do a jump or two every other week for the most part, have never lost currency, and ensure that I maintain my gear in excellent condition. Granted my jump numbers are low, but I still consider jumping a blast, and definitively don't have a "casual attitude" towards it. It's a great thing to do, and whether you are out there all the time or once every other week the stoke of it is still shared by all.