Almost everything about the war on terror I think we'd be better off not doing. I supported going into Afghanistan, but nation building/occupation was a non-starter. We started (CIA pushed the Arab Spring) the civil war in Syria, which has already cost a half a million lives and likely will scale over a million. So that was a terrible idea. We're still selling weapons to Saudi Arabia so they can genocide Yemen, where there's now open air slave markets.

It's really hard to name a single good thing to come out of the war on terror.