Why Can't More Dems Be Like Murtha?

In other words, why can't they have a f*cking spine? In response to Karl Rove's latest bullshit, Jack Murtha said-

He's in New Hampshire. He's making a political speech. He’s sitting in his air-conditioned office on his big, fat backside-saying stay the course. That’s not a plan! We've got to change direction. You can't sit there in the air-conditioned office and tell troops carrying seventy pounds on their backs, inside these armored vessels-hit with IED's every day-seeing their friends blown up-their buddies blown up-and he says stay the course? Easy to say that from Washington, DC.