For me it's not only skiing itself, the whole winter vacations is an experience. Downhill is fun, you attain high speeds use leg muscles and enjoy being outdoors a whole day. (I for one love using my muscles outdoors and I don't think I am the only one in the world) The afterski beers always taste good and the atmosphere is always pleasant, people are extremely exhausted and just relaxing. Usually that is followed by a shower and some time in the sauna, a good meal and end it with a glass of whisky only to sleep before 10 PM. The fun comes when you wake up early the next day and do the same thing again.
I've had great winter vacation experiences, but none of them involved skiing. In fact, whenever they did involve skiing, skiing sucked the opportunities out of the rest of the vacation -- given the time commitments to get there through traffic, wait for lifts, etc., etc.
So it makes me ask: why is skiing so uniquely positioned as the dominant way to exercise muscles in winter? It doesn't take half a brain to come up with a series of other outdoor activities you can do in winter. There are few things in summer that you can't do in winter that don't involve submersing yourself in water.
If you've ever been approached by the someone doing time-shares our tourism packages, you typically find that the aggregation of investment is around beaches or skiing or the occasional urban cultural trip. But little else. Which begs the question: why has skiing dominated 99% of the financial investment for winter vacationing?
Any vacation built around a single activity seems very one-dimensional to me is all. Even Las Vegas figured out a long time ago that promoting tourism there primarily around casino gambling is too one-dimensional.