I’ll go first: “You have to have children when you’re young,” told to me when I was in my late 20s, with no desire to ever have kids, and no means to support them, by someone divorced multiple times with at least one adult child who does not speak to them.
Also: Responding to “How do I deal with this problem?” questions with “Oh, don’t worry about it, it’s enough that you’re even thinking about it!”
On the other hand I avoided going into the field until I hit 30 because I didn’t want to spend all day on a computer and then have it effect my willingness to use a PC at home.
Of course you don’t have to be a programmer to be stuck in front of a PC all day so I figured I might as well do something I’m good at. The main shift was that I now strongly prefer console/couch/tv gaming over PC/monitor/desk gaming.
That said I still find I come home unmotivated for hobby dev, if I’m going to work on my hobby projects I need to get out of bed 60-90 minutes earlier and do that while I’m fresh.
This is the big one for me. My co-workers all wonder why I switched from pc to PlayStation, and I’m like, “dude, you just watched me troubleshoot 10 machines that failed our OS upgrade, and you think I want to come home and find that Windows update just broke my sound drivers again?”