I'd chalk it up to psychology. No one would want to go through what those men and women went through, only to come out the other side feeling like the whole thing was a scam and conducted for reasons never disclosed to the public.

That's why vets tend to justify their actions through whatever means necessary.

Which sucks because, to be honest, none of that is their fault. They should not live through psychological torture for the folly of other men who were too afraid to send their own kids, or themselves, into battle.

It's tragic, but it does make sense why someone would wish to justify that war in whatever way they could. Otherwise, they lived and went through hell for nothing.