Sure, there are excellent reasons to take out bin Laden and his network, so let's do it: but for the excellent reasons, not for the rotten ones.
The absolute worst case is we blame bin Laden, take him out, go back to sleep, and be wrong. What's the message there? First, if you plant a good enough false paper trail, you can mastermind a terrorist attack at minimal risk. The rank and file will die for Allah (or whomever), but the big guys are very anxious not to join them. So we've provided them with massive encouragement to go ahead, by showing them exactly how to get away with it.
And secondly, if you can plant a false trail pointing at your own bad guy, you can get the US to do your dirty work for you. So every pissed-off tyrant on the planet, from Albania to Zimbabwe, now has a task force planning to bomb the US and get the US to bomb their enemies in retaliation.
Call me an alarmist, but this really, really worries me. And I see a lot of people with axes to grind busy spinning disinformation to keep us distracted from what should be our number one priority: identify the bastards, hunt them down, and kill them. But in that order, please.