I always wear one.There are so many styles and colours and shapes now too.
I smashed my head on the ground a couple weeks back and would have definitely done some real damage if I was not wearing one. I totally would have needed to take time off riding, something that no one wants to do!
A guy this year died last run, didn't run into anything, just caught and edge fell...and unfortunately had nothing to help absorb the impact and died. So sad.
I ride: NS Pandora 146 + Salomon Absolute premium Bindings
Stepchild PMS 149 + Nitro Eris Bindings