We don't print the money we tax it from the wealthy who owe it to society to contribute a little back to the system that made their wealth possible.
A costly dart throw using significant resources can indeed be worse than doing nothing. We definitely had to respond to terrorism more than the Clinton years its just a shame we had big ears and his thick headed sidekicks at the wheel.
Our security is no better today and we have used vast resources to achieve this nothing.
Lets hope our next president whoever he or she is will listen to the people who know a thing or two, and not just emulate the storyline from their favorite shoot em up movie.
We don't print money for that particular purpose. The money is a redistribution within the country.
I think you can grasp the difference between the result of an action and its cost. The net benefit is the result minus the cost. In this sense the money spent in the middle east could have just as well been burned for fuel to heat cattle barns. Except that a disproportionate amount went to large military contractors. They made out OK.
But you cannot make a case with any reasonable argument that the US is safer today than prior to Iraq. There are still many terrorist, and the weapons are widespread. It was a sad point in US history. Lets be glad the era of big ears is through.