"Yes, Republicans were ambivalent about effectively running the war in Iraq. Most important to them was their precious tax cut. "
Which every Democrat in Congress just voted to make permanent.
Iraq was about changing the mindset of a 7th century thinking model to one of the 20th century. That does NOT come overnight.
Not every American always had money deducted from their paychecks. That was done on a voluntary basis. You are creating a strawman by manipulating things that did NOT happen.