Understood. No doubt I would be similarly inclined if I'd gone down that path in life. My beef is that I feel this is a trope that gets rolled out without question, and it doesn't even bother paying lip service to the diversity of human experience.

I feel similarly whenever I hear about someone expressing empathy with someone, but apparently only after realizing they are someone's daughter/brother/sister/mother whatever type of relative. What's that about? I feel empathy for any innocent victim, they're human, they're living a life, maybe a very enjoyable life even if they don't have a single relative.

It's a trope for a reason. Having kids does shit to your brain and breaks it in a bunch of ways you cannot anticipate. For better and for worse.