Helmets are a legal requirement over here, however, I found out yesterday that it is only a £30 fine if you don't wear one, but I would still wear one anyway for the built in eye protection. Sure, I could wear shades, but that would limit my riding to day light only, and I have enough limits on my riding time as it is, thank you very much work.
Of course, I could always get goggles, but goggles on their own look rather silly, which defeats the object of not wearing a helmet in the first place.
Those of you who choose not to wear a helmet, I respect your choice, and am slightly jealous of the fact you have a choice, but don't come running to me complaining that that choice caused you pain. Not that I hope you will ever need to
Nearly turned into a rant, so I'll end with 'Ride free and safe, brothers and sisters'
Too old to die young, too ugly to leave a good looking corpse