That was then. The Taliban have sold themselves to the opium trade in order to finance their insurgency.
This is wrong. Osama Bin Laden trained the 9-11 hijackers in Afghanistan. He raised money which funded the operation in Afghanistan. He provided the inspiration and ideology for it from Afghanistan. He was aided with freedom of movement in Afghanistan under the umbrella of the Taliban. After 9-11, the US demanded that the Taliban hand over Bin Laden and they refused. They are our enemy, and are partly responsibile for 3000 US civilian deaths.
While I agree with eliminating civilian casualties-and the new US strategy in Afghan. is doing this somewhat effectively now, those drones are hardly ineffective. Baitullah Mehsud would probably disagree with you if he were alive.