As many have stated, stretching is not something that makes any sport super serious. Stretches reduce your chance of injury regardless of what your doing. If you go ask your doctor if you should stretch every morning after you get out of bed, he will say yes. Its healthy for you.
Another thing too, I have a few friends who always bitch about not being able to do certain grabs (mainly truck drivers and nose grabs) and its because they never stretch for anything ever. I am in worse physical condition than pretty much all of them and I can almost do a full split because I stretch before any activity, regardless of the level of intensity. OPs argument that skiing is not an intense sport is also completely wrong. Skiing has a very high level of injury BEFORE you start taking park skiing into account, afterwards its down right dangerous.
All you youngins will understand stretching once you get to about 20 or so, especially if you end up injured at some point.