Who wears a helmet?

When my Dad was racing, I saw a helmet save his life, or at least prevent him from being a vegtable for the rest of his life. His Specialized helmet was cracked thru, but his bonce was un touched.
I know they dont look cool, but my advice . . . get a lid that fits, wear it, and you'll be able to grow old disgracefully (as I hope we all intend to!)

I mean I fink we all know that a helmet is a good idea for racing

but is one say necessary for popping down the shops