For me, defense is secondary. And as a former Little Leaguer with little to offer my team but a decent glove, that takes a lot to admit.
I mean, how many times do you say, "Man, if that play had not been made in center field, we would've lost!" Once a three-game series? Maybe twice?
Now how many times do you say, "That was a key hit that won us the game." Probably once a game.
Of course, I preface this third reason as if Michael Bourn is incompetent on defense, and he's definitely not.
Bourn has won the Gold Glove for his efforts in the outfield in 2009 and 2010. In my view, his terrific glove is a huge bonus to his bat and speed.