I am sorry for the loss of your friend. The only certainty is that he died doing something that he truly loved. Often dangerous, but often what happens in the course of good living and taking chances.
I am sure it hits you, as it does me when you hear about others dying while motorcycling. It is hard to reconcile this with the need to experience (track, racing, adventure riding, traveling to distant "lugares")
I often seem to use this as an excuse not to put myself out there. I am glad that you are hitting the starter button and keep going on. Smarter by the knowledge of experiences and powered by the need to experience.