In the first, working late isn't for short term gain (overtime, hitting a deadline) for its own sake, it's for a longer term (or more critical) objective: money for the partner or daycare or college. Especially the college one, setting up that money early by working overtime now means having to work and stress less when that bill arrives. It is the long game.
And you're right, as written it's not nuanced, but that's why there are questions to answer.
Why do I go out with friends every Monday/Wednesday instead of doing BJJ like I used to? Precisely the same as your answer: That's when they're available to hang out with (reliably). And yes, it's a hit to my fitness, but I haven't abandoned the gym I'm just doing it less (and not BJJ). My mental and emotional health is important, along with my physical health. So this socialization is (for me) part of my long term objectives, not just because I can.