Has the war between the U.S. and Iran become a quagmire?

When President Trump launched the war with Iran he said it would be over in four to five weeks. But it’s been dragging on for six months. Trump ran for president with the promise of no more “forever wars,” but has the war with Iran become a quagmire that has no end in sight. What are the consequences of being locked in a war with no clear rational for fighting and no exit.