What problem did Iraq face with ISIL before we started meddling there? What deep worry did they cause before then? Who is the 'coalition' you refer to that helped push them back and how do you think it is 'miraculous'. Consider those points
So let's get this straight, I've not "misunderstood" everything because you're a decade and a half out of date with your argument. Whatever happened in 2003, this is now and despite your ignorance, there is a coalition fighting this evil.
The Iraq war is a different argument, we're talking about whether we have a role to play NOW and considering we caused destabilisation in the region, surely we should be helping to sort the mess out?
The coalition is the Iraqi army, who are hammering ISIL back, and western and Russian airstrikes mostly, plus the YPG.
They were literally on the horizon from Baghdad, and had they taken it, everyone would have been bang in trouble, as it's a major Middle Eastern strategic point.
The Iraqi army MIRACULOUSLY grew out of the dust and reformed to tackle this evil and should be comended for their bravery in doing so.
They should be thanked, as well as the Kurds, for a very long time for the sheer saving of Iraq. The miraculous part is that they were underfunded, under-resourced and under-manned compared to the enemy, and yet they're now winning.
I hope I've "considered" your points.