Britney Spears has lost custody of her two
accidents children. Which isn't too big a deal, because she's already physically lost the children themselves. Several times. (See what I did there? I mocked Britney's parenting prowess and implied that she's as good a caretaker for her offspring as for her undergarments. That's called COMEDY GENIUS, ladies and germs.)
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.