'when I first heard Iron Maiden I thought the musicianship was great , but I thought the singer was rubbish and thought I could do better'. Now that might (technically) be the case, but to say that in an interview was a bit knobbish IMO.
I don't believe that was quite the quote, I remember it as him saying "I loved the music but I thought it should have been me up there singing instead", ok it may ultimately mean the same thing but that kind of confidence is what you need to make it as a singer, and perhaps make it at anything in life.
I have nothing but respect for Iron Maiden and Bruce Dickinson and they are one of the few bands that make me feel like a giggly kid again.
By the way, Bruce is actually a commercial airline pilot when he isn't touring and I have heard that they actually have to fit their tours around his flying schedule.