> then committing 10 of them to move to a foreign country to immerse myself in a new language feels very different than when I've got 60 years left

Could you elaborate on that? As someone who is younger I have noticed that many (but by no means all) people over 60 often do not want to commit to these kind of 'life-changing' escapades, despite now having the time (kids out of the house and/or retired). I assumed it was more around lack of (youthful) energy/health and the fact that you're so used to how you've lived for decades that change is far more difficult or feels more daunting.

You're saying that having a relatively shorter amount of 'time left' makes such a move different, wouldn't that fact make it easier? (YOLO and so on...)