The whole "The Last Good War" aspect of WWII is to a great degree a product of rose-colored hindsight. History has always been more complicated than that.
There's been articles lifted from the post-war occupation of Germany where someone replaced "Germany" with Iraq, complaining about mismanagement, continued insurgent attacks etc. And with a draft, I'm sure the proportion of goldbricking, ****-bird soldiers was probably a lot higher in WWII than it is with our all-volunteer professional military of today... My paternal grandfather had some sort of questionable hernia issue... and spent WWII as a pharmacists assistant at an Army base in Arizona. My maternal grandfather quit the U.S. Naval Academy because he was er... the type who "didn't deal well with authority", and wound up an officer in the Merchant Marine. (although one can argue he was "brave" as a sitting duck for subs, and did see action not too far away around the Philippines and other battles, and ships in his convoys were attacked at times...) My step-maternal grandfather drove a truck in the U.K. the entire war, and was purposely not allowed anywhere near continental Europe because he was a "troublemaker". No one says, but I think he may have been into black-market luxuries, like tobacco and alcohol over there...
For every guy who spilled his guts at Normandy, or pulled a buddy out of a foxhole and carried him to safety, there were a dozen guys who just turned wrenches, stacked boxes, shuffled paper, or, God forbid, screwed around, in relative safety
Other random, but related thoughts...
There was similar issues surrounding the Spanish American war, not to mention the whole "manufactured war" angle to it with Hearst etc. just like there are those who complain the same about Iraq and Afghanistan today.
The 1920's was a time of self-indulgent debauchery in many ways. The Great Depression of the 1930's was exacerbated and lengthened greatly by FDR's liberal/socialist policies, much like Obama's and the Democrat's Keynesian efforts now.
I don't want to denigrate the sacrifice or accomplishments of the WWII generation, however, you have to take it with a HUGE grain of salt, and keep the perspective that "The more things change, the more they stay the same". I think someone who's been raised in the latter 20th century and early 21st and was miraculously transported back to WWII would be shocked.
And of course, there is all the "dirty politics" of the times, like the blind-eye given the Soviets, when some estimates have Stalin killing 10x the civilians Hitler ever did. Our own internment of Japanese-Americans etc..
So I don't fear quite so much for the future, or the present as some. My gut tells me it's only 5% (if that) "things/people are actually worse", and 95% (or more) of "Same ****, different decade."