What I hate is to be cought behind children doing snow plow skiing in narrow traverses (not the children themselves, dont get me wrong!). Aaaaaah! I immediately get paralyzed by their unpredictable and very sudden turns. And cause I'd never ever want to risk to get too close to one of them, I just stay behind and wait for my chance. If my husband has to wait for me more than the usual seconds, he always asks: got stuck in the bunnyschool bottleneck, again?!
Most skiers on our mountain ski very well, no prob at all to share the slopes with them. A problem are only the tourist skiers (as well as boarders!) who only ride one week a year and "want to make the most" of this one week = alkohol+speedy riding+showing each other, how brilliant thay are. At those peak season days we mostly stay away from the blacks cause they tend to gather there and it can get dangerous.