As a European, even if I'm relatively well-versed in American absurdities, I fail to understand how the hell anyone could make a connection between childlessness and selfishness.

All my friends who want kids have the opposite dilemma, they want it on a personal level but they feel like having children is a selfish thing to do on a planet that already struggles to sustain the people on it, and where these children would face a very uncertain future.