To truly win a war you must inflict much more damage than the enemy is willing to endure. Smart bombs are great at eliminating precise targets, but terrible at causing the awful devastation that ends wars. Seeing your cities destroyed one by one, and knowing that the enemy will not stop until you surrender completely, is what ends wars. Contrast that to the current US strategy; only destroy military targets, bend over backwards to minimize civilian casualties, persecute your own troops for politically incorrect killing of the enemy, treat enemy prisoners better than your own troops, tolerate subversive behavior from politicians and the press, demonstrate a lack of will, and be unwiling to take casualties. The bottom line is that you cannot win a war using politically correct tactics.
No truer words were ever spoken!!
Questions to contemplate: How did we get to this concept of fight antiseptic, politically correct wars and WHY do our leaders continue to be blind to the futility of fighting wars in that manner?
If your intent is to eliminate an enemy who represents a threat, then destroying it completely is a great idea. But if this "enemy" is a faction within a larger society or nation, or possesses valuable resources that could be exploited by the "winner" in the war, then destroying the enemy makes no sense at all.