Not to mention that statistics mean very little when it's your own head hitting the pavement. I suspect that if you compare the head injury numbers to the total number of cyclists you'll find that only a very small percentage are injured or killed while riding. Then again, if that small percentage is me, I'll take my chances with a helmet on.
!!!Warning!!! None of my business statement below!!!
(I'm tempted to say something about taking every precaution possible to avoid injury or death now that you have a little one, but that's a little off topic, and cycling is somewhat inherently dangerous. Of course, driving is dangerous too in the big picture, it just takes a little longer for the pollutants to kill you.)