Clubber, it’s all about minimising the risk in my opinion. You’ll never remove it entirely, and still make it a fun sport. We could all quote examples of sportsmen and women that receive injuries that are both unexpected and well outwith the norm.
If people want to take the risk, that’s their choice. In my opinion, and experience, wearing a helmet has twice saved me from potentially serious head injuries so I’ll wear one everytime I’m out on my bike.
I do think it’s a perfectly valid discussion though, and shouldn’t be written off as a topic just because of someone’s almost evangelical stance. Torching someone and telling them to F off just because you disagree, well, it’s not exactly an adult response is it?