If you want kids then have kids.
Individual actions do not matter globally.
We are far away from global overpopulation. Unless people insist on fossil fuel, waste of resources and animal products as food.
More people are needed for more work for a better world.
Have a good life because it is important for work for improvement. Improvement means better technology.
I know about the dangerous situation but I am still optimistic for humans.
http://landartgenerator.org/blagi/archives/127
https://thinkprogress.org/solar-wind-keep-getting-cheaper-33...
https://www.youtube.com/watch?v=XdLRiaCjRkw
https://www.reuters.com/article/us-climatechange-carbon/scie...
https://phys.org/news/2017-09-solar-to-fuel-recycles-co2-eth...