There's nothing wrong with wanting your kids to be your own, nor with the desire to ensure that part of you makes it to the next generation. I'm sick of anti-humanism backlash against doing the thing that every organism ultimately exists to do.
Considering humans are the demonstrated reason for climate change, I'd argue some anti-human sentiment is a bit overdue. Nature's going to be fine. Life will recover once we're gone. It's us humans that are going to suffer because of our humanist entitlement.
The idea that some environmenal metric is more important than human suffering is bizarre and vaguely masochistic. The environment is an instrumental good for humanity's use, not a legitimate moral object in itself. Human extinction is a maximally bad scenario no matter how well the environment does afterwards