We frequently get this discussion in the UK. It came up during the Olympics when cyclist was killed by a vehicle turning left across his path (he'd forgotten the simple rule of never go up the nearside of a vehicle that could turn across you). The media then got Bradley Wiggins in a press conference and asked him whether there was any way to prevent the death. Bradley (who'd not been briefed by his team or by British Cycling) said "Perhaps we should make helmets compulsory".
That doesn't work for a number of reasons:
- Try getting an arsy teenager on his BMX to use a helmet, helmets aren't cool
- You may take less care and do reckless and riskier things if you're wearing a helment.
- I want to choose whether I use a helmet.
- I don't want people dissuaded from getting on a bike because they don't want to use a helmet.
That said, I chose to wear a helmet. I've had too many visits to the hospital. I've cracked a helmet (rather than my head) when I crashed at speed. I've seen the reports of James Cracknell who was taken off the road in America by a truck wing mirror and survived (probably because he was wearing a helmet).
We're all adults we should be able to make our own minds up. We can also encourage our kids to wear a helmet but we don't want to follow our European friends by legislating for it.
Europe has a lot of advantages over the UK. They have bigger wider roads with dedicated cycle paths, they have car drivers who aren't selfish bastards.