But you and your significant other are not the only players in the game. There are other people who will have children, regardless of what you do. So your choice is between a future that contains your children, who share your disposition and are indoctrinated by you into a specific worldview, or a world that does not contain them.
How does your side win if it promotes a strategy of not even showing up to the game?
I don’t get your position. You’re evidently not concerned with the greater good, only with what your own descendants will experience. But then you’re completely willing to ensure that you will leave no descendants.
I think you're poorly informed, or perhaps in denial about how far down the road we already are: [0] [1] [2]
It's essentially too late for your or my hypothetical descendants to have any effect on "the greater good". The IPCC says either we cut _worldwide_ CO2 emissions by 50% in the next 11 years, or it's game over for +1.5C scenarios: all coral reefs die, along with most of the fish, crop yields down 40% in some places, mass migration and resource wars are likely.
So basically I think it's too late for any "greater good" to come from my having kids, and I believe it's immoral to bring a life into a doomed world just to suffer.
I get the risks. I’m just not a quitter. Somebody has to show up and try and I’m willing to nominate my descendants for that. And I’m pretty sure they’ll be okay with my choice. Many people throughout history have been born into some pretty fucked up situations (slavery, etc.) and decided that life was worth living.