I love this type of statement, wearing a helmet can make you hit something that your head wasn't going to hit anyway so the reason you hit your head was because you were wearing a helmet. But what about the thing that your head was going to hit, ahh yes the impact was absorbed through the helmet and although some head damage occurred it was significantly less than would would have happened had a helmet not been on your head. I agree helmets are useless in a lot of situations, but a lot of crashes are caused by people being clipped by cars, slipping on loose surfaces, misjudging corners or in racing being tapped by other bikes. These types of minor offs where your momentum means your head can hit the floor, railings by traffic lights, other riders bikes etc without your control can end in a lot of blood, bruising and skull fractures.. helmets can reduce (not necessarily will) the damage done to your head. Why wouldnt you wear one for the sake of 'it might not save me so therefore its a waste of money'. Ive posted this before, but I had a head on collision with the back of a minibus while I was traveling around 25mph. My helmet was a mess, cracked dented and fractured, my head however was free from bruises, bumps, lumps, cuts, grazes. I had a headache... but I believe it would have been a hospital trip or worse had I not been wearing it.