Why do so many parents look down on people who don't have kids?

I have friends I used to really be close with, but one of my closest friends for a long time has 3 children. We used to talk all the time, but now she's got "mom friends" and cares more about them than us that don't have kids. We haven't talked in over a year, everytime I try to reach out to er she just leaves me read, although I never done anything to her

Why do so many parents look down on people who don't have kids?
Post Opinion