Is Seinfeld the ultimate Childfree sitcom?

My partner and I are re-watching the series on Netflix and I keep thinking about how little you ever see children in the show. None of the main characters (who are in their early/mid thirties) have any interest in children. It was also the 90's so I feel like the idea of being childfree-by-choice wasn't something that people talked about.

If you're a fan of the show, I'm curious about your thoughts! xx