No, not really.
But in time more will, mostly because as the current pros retire, they will be replaced by the ones who grew up with helmets on.  It is now a socially accepted practice, and soon it will probably be a law, unfortunately.
It's funny how many parents think it's absolutely insane to let a child ski or bike without a helmet, or ride in a car without a carseat, etc.  Even though most of these things are fairly new developments, and millions of people grew up skiing and biking without helmets, riding in cars without carseats etc, and yet somehow the majority of them miraculously survived.
If you all grew up wearing helmets everytime you rode in a car, then you would think that anyone who rode in a car without one was crazy.