I won't speculate on the initial part of your question except to say that we have spent trillions on defense to help our soldiers, sailors, airmen and Marines take on our enemies with all the aplomb of killing baby seals. And the new sheriff in the SecDef's office is going to make sure they are allowed to do just that, IMHO.
(snip)with all the gutless wonders we got today?
As for this part of your question... keep in mind that WW2 was not all skittles and beer when it came to bravery and commitment to the cause, greatest generation legends not withstanding.
There were draft dodgers. Zoot suit riots. Profiteers. A massive black market (some estimates were that the 'black market' economy equalled or exceeded the rationed economy.) There were Conscientious objectors and protesters (though not in great numbers.) There were troops who refused to fight and several mutinies. City councils in coastal cities refused to observe blackouts during the early years of the war, resulting in thousands of sailors being lost due to torpedoings (turning off the lights would have hurt business in NY, Boston, Miami, etc...). And by 1945, there was massive discontent at the length of the war and cost... and had the casualties come in from Downfall... there was a good chance that Japan would have gotten a negotiated settlement (Read Franks Operation Downfall). This was only averted by the dropping of the Atomic bombs which ended things fast and, arguably, before the population in the U.S. could act-out their war-weariness on the street or at the ballot box.
Remember that the U.S. was really only engaged in WW2 3.5 years. And was on the defensive for only about a year of that. After that, it was War of the Worlds and we were the Martians. England, Canada, Australia... were involved for 7 full years much of it on the defensive. China and parts of Asia were engaged for 12 years or more, entirely on the defensive.
How do you think the Greatest Generation would have behaved if they had to endure what England endured?
I've said it before and I'll say it again. I don't like the term Greatest Generation. Because every generation has its greatest... and its losers. The Vietnam generation contributed some 2 million troops to the military and sacrificed 50,000 killed and many thousands more wounded and scarred. The next generation stood at the Fulda Gap and, through their strength and commitment helped crumble the Soviet Union. And their kids have been the greatest when it came to our latest fight(s). What makes them less great than the Depression/WW2 generation? How about the WW1 Doughboys? They were pretty great. How about the amazing sacrifices of young people in the Civil War? They were pretty great, too. Or the Minutemen who left their farms and created a hell of a great Republic? Don't they deserve to be called Greatest? With all due respect to the WW2 generation, I think Tom Brokaw should have called his book "The Greatest of Their Generation." Because his book title insults those before and after... who were equally great.
As for today's gutless wonders... IMHO we get to see the 1 percent of Antifa moonbats peacenik hippies on the news every night. And hear the snowflakes whining endlessly and those that get all in our faces are the ones that make news. But I guarantee you the vast majority of the young people in our nation today would rise to the occasion if and when called. While the tiny noisy minority would act just like the whiny few who didn't contribute in WW2... but who never made most history books.
Cheers,
Sirhr