I always assumed as a young kid that when I got older I would cease to be afraid of things, that some switch would flip in my mind and I would no longer find "adult things" menacing and large. I find that this is not really the case. One gets used to things that would at first be frightening, gets used to them because they are expected or required, but no switch is flipped, only a gradual progression towards familiarity. Beginnings are still scary.