alt Hacker News+1. I also felt this huge gap between knowing (intellectually) what parenting is and actually experiencing it. It really changes you, to the point that now, when I talk to childless people my age, I feel like we're fundamentally differently. I think I can perceive fairly accurately whether someone my age is a parent after just a few minutes of general conversation (obviously, without having to visit adjacent topics).
I experienced this so strongly I spent some time actually writing a poem (in Spanish) about it: https://alejo.ch/39l
> It really changes you, to the point that now, when I talk to childless people my age, I feel like we're fundamentally differently.
As a childless person, the inverse is equally true. I have wildly different levels of obligation and constraint - and that difference typically becomes obvious very very quickly. I don't say that as a better/worse, just different.