[tempodox]

I've had my share of accidents riding my bike, and in none of them would a helmet have helped anything. So much for anecdotal confirmation.

There are certainly conditions that make the use of a helmet advisable, but that depends on the situation. Anything more than that is just the result of lobbying & PR by the helmet-making industry.

[truthsayer1980]

I've never seen a black swan.

[tempodox]

Point well taken. Of course you're free to determine your personal level of risk tolerance. Just don't force others to convert their homes to nuclear shelters (after all, one nuclear explosion can ruin your whole compile).