Referring to people who don't have or want children as "parasites".

I wonder why some childfree people become "bitter"?

PL - "Childfree people are parasites!"

Also PL - "Why are they so bitter?! If they don't want children, just don't have them, nobody is forcing them to have kids!"

Sure, it might not be force in the literal sense, but, harassing and shaming people in to having children is still (figuratively) forcing people to have kids.

Obviously, this isn't a childfree subreddit, but, even if I had children myself, I still wouldn't refer to childfree people as "parasites".