- They see the Taliban gaining strength in Pakastan. If the Taliban takes over, there is no place for the current government. Better to take them on now while help is available.
- Protection from India. While the U.S. has a major presence in Pakistan, India is unlikely to do anything rash. It would mean a cut-off of their programming and tech support industry at the very least. The protection would probably be long lasting.
- Boost to economy. If U.S. bases are semi-permanent, there will be money flowing.
- Debt forgiveness. Do the "right thing" and a few billion in red ink can sort of evaporate.
- Not getting "colateralized" by the U.S., since it needs to go over someone to get to Afghanistan.
- "Technology tranfer": might learn a thing or two.