> This sounds like absolute bullshit. I've known so many people who have been killed or permanently disfigured because they didn't wear a helmet while biking in a large city.
When I was at uni and was cycling to a 10am lecture, a small van pulled out of a side road across my path. I was in a cycle lane and had right of way. He simply didn't look in my direction until he had already started to pull out. I was unable to stop or avoid him, so hit the front of his van head on, was briefly airborne, and landed on the road on the other side. Miraculously only scuffs and bruises, although my bike was a write-off. At that point I started wearing a helmet(!!!)
The next year, one of my friends went over the handlebars of her bike during a collision, except she landed head-first on the road, thankfully she was wearing a helmet. The helmet was split, she walked away with nothing other than mild concussion. Another friend and I walked out to rescue her bike later from the accident location, it also was a write-off.
Once you've seen a bike accident up-close there is simply no justification for not wearing a helmet. Even if you haven't seen an accident, wear a helmet!