I'm not really advocating for childlessness. I'm accepting of people who choose that life, but I don't have any skin in the game regarding whether or not anyone besides myself have kids. It's their choice.
The only judgement I make is people who have children and have no regard for the environment. I think those people are risking their children's long term welfare. That's a dick move. If you have kids you have a moral obligation to try to make sure the planet they live on in adulthood isn't fucked.