I think all soldiers lost in that hell-hole are unnecessary. Do you know what the point of this war is?
So, you’re saying just bring all the troops home and let the Taliban/AlQuada/Hamas, etc. have the whole of Afghanistan as their own unimpeded breeding/training ground for terrorists? The purpose of the engagement there is to weed those factions out before they come here. Not unlike the purpose in Iraq. The idea is to engage them on their turf rather than your own, because engage you they will.