Your sarcasm is noted. The point being it would still be a hellhole just as it is now. So why spend so much of our blood and treasure just have things the same, just with different players.
I think a bold long-term military commitment there would have changed things. There is a growing Christian population, and with slowly increasing economic development, extremism would be less an alternative. ISIS types would be marginalized to extinction. Maybe 10 yrs, or 20.
After W, we should have strengthened our presence in SE Asia, NATO and set up permanent bases in Iraq. The price of freedom and controlling terror is force - a stronger military, not a shrinking one.
At the same time we should have been developing more domestic oil production to lessen dependence there.
By the way, all those things, McCain or Romney would have done. But no, instead we have ISIS threatening Baghdad and taunting Washington, Russia taking Ukraine, and China expanding in the Pacific. Thanks to BO in the WH.