A few weeks ago I related a charming anecdote about the Cracked offices that involved thinly veiled racism, sexual assault, rampant stupidity and may or may not have actively advocated huffing gasoline (several times). Then I figured: That would make a great children's book! I was wrong, but here it is anyway.
Sometimes it's just a matter of making the US Department of Defense look, like, REALLY cool.
Actual impending doom like global climate change or mass extinction just makes people bored.
In some cases, the Marvel source material just did better.