stated by the president:
"our troops will continue coming home at a steady pace as Afghan security forces move into the lead. Our mission will change from combat to support. By 2014, this process of transition will be complete, and the Afghan people will be responsible for their own security."
-"An October 2012 Pew poll found: 60% of Americans said they wanted US troops removed from Afghanistan as soon as possible, while only 35% support leaving US troops there "until the situation stabalizes."'
There are more influential areas of the world we can be sending our resources such as to regions with mass genocides in Africa.