"Yay, whatever, who cares." Oooh, you know you've hit one of those prime spots in life once that attitude takes over. It's fleeting, like everything else in existence, so let's enjoy it while we can, eh?
I think apathy is a very underrated emotion. If it's longterm and constant, it'll kill you. But that's true about many emotions! Getting a chance to tap out and declare "not my problem" for a bit is pretty healthy IMO; the alternative is (likely) going crazy, so take a break! You've earned it!
...Or maybe not so much "you've earned it"* but more like "you'll die if you don't take a break, or at least get incredibly sick." Something like that.
(I may or may not change my mind about all of this in a few hours.)
*Or maybe you DID earn it. How could I know? I have no idea who's reading this, and therefore have no way of knowing any given potential reader's degree of effort, energy, morality, or "other".