Why can't folks understand, this is what servicemen do? Most of them understand it; it's a dangerous job, they understand the risks.
Pulling the troops out is analogous to not using coal anymore because those miners are trapped. They know the risks their jobs entail too.
Have you ever, ever heard a policeman's mother or a fireman's mother or a utility worker's mother or a bridge-builder's mother or a chemical engineer's mother or a fisherman's mother or an airline pilot's mother or a construction worker's mother whine that her son's death was in vain? It's politics, pure and simple.