Well, yes, actually, although it's arguable whether we actually created him, or just trained him to fight. ALL policies have unintended consequences, and what the people who argue that we never should have opposed the Soviet Union's expansion attempt in Afghanistan never say is what the preferred policy would have been. Let the Soviets expand unrestrained? What was next, Pakistan, India? Who knows? It's easy to be a perfect armchair quarterback when the game is over.
The salient point is that Cold War tactics kept the fight out of our back (and front) yards. Looks like a win to me.
This war on ALL terrorism will be somewhat different then the cold war. To many random elements. Also, they have the ability to hit us here at home, and the determination to do just that. Whats next, bio or chemical? I agree this will be a long war and we will see many more casualties, here at home, before its over. I do not accept the concept of creating murderers to kill murderers as a moral and viable strategy to fight world terrorism.