http://www.nytimes.com/2012/03/27/world/asia/support-for-afghan-war-falls-in-us-poll-finds.html
Its not about doing what the people want, but protecting them from things they can't effect. Its the president and his cabinet that decide if we go to war, not those serving.
There would be drastic implications if we just pulled out of Afghanistan and did nothing.
Not saying that I'm omniscient or anything, but most people don't understand what and why we are at war. All they see are people dying and lunatics ranting about how stupid our government is.
My brother is active duty in the marines, three of my close cousins are active duty air force, my dad is an army vet.
Its not that they want war. Actually, its the complete opposite.
Edit: I'd rather not start a flamewar, so this will most likely the last thing I'll say on the subject.