First, our thoughts and prayers got the family and friends of our fallen brother.
Second, I am in agreement with Mike as well, I believe it's knowing your own skill set as a rider. Depending on route, condition, temperature, and the other rider I'm with really determine my position. While I enjoy the feeling of riding without a helmet one must always make a decision knowing the risk involved. I'm sure the one day that I don’t take the time to think about it might be that day I pay the price.