Wally,
I believe there was a study once showing that people who choose their own number in a raffle/lottery are more prone to believe that 'their' number will win, despite the odds being exactly the same!
Remeber you've got twice the chance of a failure, thus twice the chance of an unfeatherable failure, twice the chance of an uncontained failure, twice the chance of an uncontrollable engine bay fire, and a lot more chance of that spreading to the fuel tanks and wings!