It should be obvious, but I guess it isn't. I'm 99% sure that the helmet didn't "save your life" or even have much of an effect at all. Take a look at the *huge* number of people on this forum and elsewhere who claim that their helmet "saved their life"... if that were true, then *unhelmeted* cyclists must have a very low survival rate... or at least have a horrendously high rate of serious head injury. Oddly they don't. Oddly, it is no higher than it is for cyclists who *do* wear helmets.