But... but... David Ortiz SHOULDN'T have a career.
He can't even field at first base, the easiest defensive position in the game!
Catch the ball if it is thrown directly at you, hold the runner, make half-an-attempt to catch the ball if it is HIT at you. That's... that's about it.
Part of the wonderful challenge of baseball is that everyone plays offense and defense and... if you can hit dingers all day, that's fine, but you've also gotta be minimally proficient at defense... and vicey-versy.
That's part of the fun of the game of base... you have to be at least somewhat rounded as an athlete because there is none of the ridiculous specialization of football, soccer, hockey, etc.
And... lets flip it around... how fuck*ng awesome is it when you've got a pitcher who goes the extra mile, works on his hitting and... can spray .250 wortha singles and be equally effective as a hitter to a defensive catcher or shortstop?
Isn't it rad? Like "uh-oh, no automatic out for you, this guy can hack a little".
It's pretty much the only thing interesting about Dontrelle Willis now, for example, now that everyone figured out his weird timing thing and he's mediocre like he should be. And of course, with that, he's traded to the Tigers.