Recently had my first son and it’s a lot of this, but mainly time becomes more scarce. I’ve got a number of hobbies but much less time to do them and less inclined to allocate to do nothing-activities, so getting a drink at a bar (which I don’t drink really) isn’t likely going to fit in nicely.
Now if you’re into playing musical instruments, hacking together a little project, or want to workout together or perhaps play a board game that’ll be much more plausible!
This was all true before parenthood, but much more enforced now. I think this is why parents often remain or develop friendships with friends and who end up having kids in the same activities.