I understand the frustration of those people, but don't they recognize the advantage of the U.S. maintaining an interest there? China's been flexing its muscles pretty hard lately, and those 2 don't exactly have the friendliest of history's...
But then again I wonder what politics are like over there. Maybe there's a movement to ally with China? I don't know
I think people in general are averse to the idea of foreign of bases on their soil even if they are there to protect them.