Ok I like to think I'm pretty good and logical thinking so here goes.
One of our main reasons we were told we were in Afghanistan was to prepare the Afghans to run their country and protect their citizens from the Taliban. We gave them planes, helicopter, armored vehicles and 20 years of training to do so. At least this is what we were told. Here we are 20 years later and they fall like a house of cards. So what in the mother effing hell were we doing there for all those 20 years? My educated guess was lining the pockets of our politicians and their military industrial complex friends. We've been had folks.