I have several friends who proclaim they don't wear helmets because it gives artificial confidence, thus they ski faster. This is really a stupid arguement in my estimation. One changed when a friend was caught in bounds at snow bird and killed earlier this year. he helped in the search and realized how you can be pulled into things entirely out of your control. Having the gear and knowing how to use it is kind of like wearing a seat belt in a car. It just makes sense. It doesn't replace common sense, but makes sense.
I do not have an avalung. Like the helmet, I should.