I don't have children. For decades (I am old enough that I can say this - two decades!) people have been telling me some version of "you just don't get it" about numerous subjects, often only tangentially related to the having of children, because I do not have them.
Yah, well, I see parents thinking it's cool to put toddlers in concentration camps, so maybe having children is not the empathy giver it is supposed to be.
