Avalanche danger = mortal danger.
52% of those buried in an avalanche are pulled out dead (1).
95% of avalanches are caused by skiers.
Slab avalanches are not predictable.
Skiing out of bounds = leaving the secure area.

Every year in the Alps, an average of 120-150 backcountry skiers are killed by avalanches (2).
Avalanche accidents happen more often to expert skiers than to inexperienced ones (3).
Apparently, after many years without problems, skiers tend to underestimate the danger of avalanches.