What makes you think that it's just women who get asked/judged/advised about having kids?

Because it usually is? In my anecdotal experience, I've only been asked those sorts of questions once I got married. I wouldn't imagine single men get asked "so, when are you gonna have a kid?" very much.*

*Unless it's their Mothers, chiding them about wanting grandchildren.

You'd be incredibly wrong about that cat & beard.

In my experience fellas do get the question, but not nearly as often (or with such fucking precious condescension) as the ladies appear to. Once asked, it seems less likely that a guy will have to explain exactly why he doesn't want to be have a kid.