Remember kids... always wear a helmet. (The almighty bikeradar helmet thread)

Interesting, why do you sometimes feel like wearing one?

if i'm riding into town/around town going to the pub or just generally going about my business, in my normal clothes, i don't bother.

when i'm on my geared road bike, all lycra'd up and actually going for a training ride, i do.

don't know why. vanity? can't be bothered to take it off and put it on again all the time? who knows! i've never really thought about it before.