You're better off trying to impress eco-friendly memes on the offspring of people who insist on breeding no matter what. The notion of having kids to fight climate change is silly at best.
Even if you only look through the lens of offspring's ability to impact climate, then having children is essential unless you think changing the climate can be done in a single generation (the current one).
Until then, the decision for fence-sitters is whether or not to shrink the window. Encouragement toward them should be in the direction of not to.
Genes that predispose people toward selfless, bigger-picture thinking will snuff themselves out while genes that promote selfishness proliferate.
I don't think it's clear at all that a lower birthrate is a good thing.
http://worldpopulationreview.com/countries/total-fertility-r...
That is an extreme viewpoint. The number of people thinking this way may in fact be “increasing” because of the social media echo chambers that make almost any extreme viewpoint seem normal to those who have them. But I seriously doubt the number of people that actually refuse to have children based upon fear of climate change is high enough to make any waves in population numbers.
However I feel for every person coming to this conclusion there are 100 more people on this planet who are ignorant to this trend and will continue to keep having babies, whether intentional or just by the circumstance of where they live.
Opinion/Personally I was on board with the whole, "I'll just adopt" rather than bring an additional carbon creature into this planet. However I went from being idealistic and 20, to rational and 30 and during this time met the love of my life whom if I had not met her I would never consider having a child of my own. I think that is a big factor, finding someone who you truly want to grow old with and start a family.
The idea of a creature made up with some of her genes and mine is amazing. Also call me selfish but why should I deny myself the experience of having a child because of some unforeseen doomsday future event that even with me denying myself the experience will happen anyway. Sure I may slow it down by not having a child, but the chances of 1 less human on this planet impacting the future of the world is about as probable as me creating a child who will solve the worlds climate issues, again just my opinion on the matter.
Most people would think it's absurd to view having children as "selfish" since it definitely requires a lot of hard work and sacrifice and is generally viewed as building the future of your family, community and humanity.
It's actually kind of sad that this anti-human trope is becoming so prevalent on message boards.