i can't fathom being upset about friends having kids, if it helps. i think there are plenty of adults who may not want kids who are happy enough for friends who have them. Will it change how much time you spend together or how things are?

Sure, undoubtedly. But so will any other life advancement like college or grad school or a promotion to a busier position. As long as both parties still make an effort to maintain the friendship it can be maintained. It always takes more effort as you get older and move out of the things that keep you together, but is that a bad thing?

Example: many people have said once friends stop roleplaying they drift apart, in this community. In my experience I've kept the friendships I wanted to with people who quit because we both kept up the effort. Someone quitting rp or having kids or moving doesn't make them less interesting or less compatible as my friends, it just means sometimes we both need to put in a little more effort to stick together.

I think what's happening is a lot of people are telling on themselves as being shite friends.