It’s probably because your relationships completely change once you’re a parent.
You’ll have a new set of friends if you’ve done NCT, who are all going through the same thing at the same time as you - they’ll be interested in seeing your baby. Your relationship with your family changes - other parents, and grandparents bloody love kids. And your friends who’ve had kids already, who you think have drifted away, but actually they’ve been working hard at their own lives and doing the best they can - suddenly they have a way to reconnect with you too.
But your old friends - those who think like you do at the moment - get more distant, because all you have to share is “mundane” stuff, but your new friends are your new life now, and they’ll be the ones who’ll be by your side if you need them for the next few years.
My instagram feed is littered with pics of Jimbo, and I’m not going to change that just for fear that someone thinks that it might not be very interesting. Going on the number of likes, he’s more interesting that craft beer or photos of indie bands.