I stopped talking to my mother (with rare exception) due to that very emotional blackmail. Knew I didn't want kids but started hounding me about "grandbabies" when I was all of 17.
The opinion that childfree people must be young, immature, and selfish is shockingly common.
Having children is a selfish choice as well--people have them because they want them. That's selfish. It's not wrong, but it's not some altruistic deed, either.
At least society is slowly coming around to the idea that having children is a choice and not a requirement.
Yes, but doctors aren't very good at it.