Many Americans have no concept of what losing in Iraq will mean to our own comfy lives here in this nation. We must win or face miserable changes and deadly consequences.
Ok, please define what you mean by "losing." Do you mean military defeat where there is a US surrender and all of our military lay down their weapons? or do you mean the sort of losing that took place in Viet Nam? or something else?
also
based on the answer above, please expand on the scenario that you see happening as a result.
"Losing" in Iraq probably means losing Israel and allowing Iran to develop as much of a nuclear weapon and delivery system as their oil money can afford that will eventually, and not a long eventually, be capable of reaching the continental US. Our anti missile system might be much better then than it is now but it would be better to forestall the problem than to have to rely on countering it. And Russia will be helping a successful Iran that has beaten or proved immune to America.