I couldn't care less when people drive badly when it rains, that isn't really that bad.
It's the people who drive the speed limit in their four wheel drive cars on the highway when it is icy.
Just because you have four wheel drive doesn't mean that you have unlimited traction in the snow and ice! Sure, it may help you get up that hill without slipping all the way down, but you aren't going to be able to grip the road around a corner when there is a thin sheeting on one of the only substances rubber doesn't stick to very well!
That, and the greedy people who are only hurting themselves and the future. Helping yourself isn't really helping at all.