Earlier quoted context omitted.
We still lost with nothing to show for it but debt for generations, millions of unnecessary deaths, and the TSA. Enjoy the debt service, “support the troops,” and millimeter wave backscatter scans without your shoes.
The US hasn't been invaded since 1942. That's what we have to show for it.
It can sound cheeky but perhaps the biggest thing you have to show for it is overall more free and less murdery world thanks to people wanting to prosper and stuff. Going to war is suddenly unappealing (unless you are very small and have nothing to lose, but then you do less damage comparatively).