I say... wear em if you want. None of my business.
I agree, each to their own.
Actually I didn't wear one for years until I came close too many times to hitting rocks with my head when I fell..
that and tree limbs.
oh..and they're warm and don't restrict my vision..
they aren't full-face.
as for kids in ski schoolhaving to wear them, it's due to the damned insurance companies and the people that have sued over their kids getting hurt...
I would have my kid (if I had one) wear one until he/she was old enough to pay for their own med bills !
but I treat helmets for skiers the same as for bikers.. let each person decide. don't pay for the health care if they get hurt, let each person bear their own consequences