We’re seeing the first generation who are worse off than their parents. The future looks bleak with climate change and multiple conflicts around the world.
Not true. You are probably looking at last 70 to 80 years. Look back several millennia. Our generation is better off than 99% every generation before us. Climate change, multiple conflicts around the world are no where near a big problem compared to the struggles our ancestors have gone through.
Silent Gen and Boomers lived in an unusual boom time that hasn't existed before or since. America was the world's factory and everyone else was out of commission. We had it all, and that'll never happen again. Now we're reverting to the mean, and it'll be okay. We still have great wealth.
Just look to the developing nation algorithm. Our wealth is being spent on bringing up other economies (giving us cheap stuff in exchange). That's not a bad thing.
People aren't having sex (or children) because of Internet, TV, porn, social media, modern work habits, etc. You can't unplug from it.
Furthermore, raising kids used to give you an extra farmhand or house cleaner. Now it gives you an expensive equivalent of a dog. Plenty of folks don't want the trouble.