Are SO important. I don't mean to sound old or anything - but one saved my life and another prevented a lot of injuries.
I wouldn't say I was exceptionally wreck-less on a bike, but I did have a LOT of fun. I raced alleycats (where I was hit by a car and rolled off the hood. Won first female but found a crack that ran all the way from the outside to the inside of the helmet after the race - saved my life), played a lot of bike polo, raced unofficial track races (responsible for the loss of another helmet - over the handle bars) and wove through traffic (ok, that was wreck-less and irresponsible. 7 traffic lights and got off with a citation and no injuries. LUCK-EEY!)
My point comes to this. Soren has two bikes. A Strider and of course, a tricycle. And he is getting brave. I mean - really brave. He's a bruiser and can take falls, but helmet wearing in this household is a non-negotiable. My dome would be scrambled eggs without one and I still feel the pain of a knee injury from another cycling accident. I know how dangerous they can be, even in the drive way.
But cycling is so much fun and I want Soren to love it too, and he does! I don't shy away from telling him just how dangerous it is to ride without a helmet. It isn't always easy convincing, but we are getting there. He tells me, 'Ride Bike! Helmet peeease! - fall, OUCH! hurt, waaaaay bad!'. Want to get something fun, check out these little nuttys!
Soren has this one - gotta figure out a way to scratch off NY and replace with OH, or QC (for Queen City).