lol, looks like I'm the only one to vote yes. Here's my reasoning:
The main goal in any war is to compel the enemy to do your will. You don't necessarily have to annihilate his fighting forces to do that- although many times that's what ends up happening.
Our country has the ability to destroy the Taliban, but lacks the will. The Taliban has the will to thwart our goals in Afghanistan, but lacks the capability. Because of the two aforementioned conditions, it is unlikely either side will achieve victory for the forseeable future. If we can work a negotiation that will allow us to meet our objectives in the area but still allows some people who had been with the Taliban to live, I'm OK with that.
The Taliban existed in Afghanistan long before we invaded, and if they hadn't allowed AQ to use their country as a base to attack us, the TB would probably be in power there today. If the TB will completely break with AQ, and will adopt a political position that is acceptable to our values, then I'm OK with some of them coming back into the government. The two conditions that must be met first are that a) we must negotiate from a position of relative strength, and b) we must kill the insurgent leaders who will not reconcile.
This applies to the Taliban and associated organizations only (HIG, HQN, etc.) not AQ. AQ is completely incompatible with our value system and is an existential threat to our country- much like Nazism was. AQ must be destroyed, not just merely defeated.