I remember there used to be this Ad several years back on TV that urged two-wheeler riders to wear a helmet. It showed a hammer coming down on a coconut and coconut being smashed to pieces and then the Ad used to ask a question imagine if your head had been there instead of coconut. I don't know how many realized the importance of wearing a helmet while riding a two-wheeler from that. Some criticized and opposed when Govt. made it compulsorily to wear helmet saying it should be left to people as per their wish, those who worry about their life will definitely wear it.
Yesterday, when we were buying groceries, a bike rider, traveling at great speed, tried to overtake from the wrong side of the lorry and while overtaking touched the lorry and fell down. The speed was such that his helmet flew out of his head, probably he had not secured it and just kept it on head to avoid law enforcers, and his head took the impact of his fall. There was blood all around especially around his head. Agreed he was in hurry, but what if you don't even get a chance to scream. The ambulance took him to the hospital. Don't know what happened further, but certainly he was unconscious.
I feel, wearing helmet while riding a bike is must, whether its a short distance or long, and it should be enforced if people don't realize its worth.