2008 was the beginning of the recession, and in many ways things never really recovered. Cost of college never went down. Housing remains unattainable for most young people. And the job market is becoming more exploitative than ever.
Financial uncertainty creates anxiety. People with too much anxiety don't have the time or energy for relationships and family. As it happens, countries where this is felt even more, like Korea and Japan, have it far worse.
Expectations are a lot different for high schoolers than adults in their 20s. I absolutely got rejected quite a bit in my 20s for living with my parents. Not by everyone but it was common. My 20s mostly came after the 2008 collapse, coincidentally or not.
This is in the US by the way and I’m sure it’s a cultural thing. In many countries, living with your parents until you’re financially stable or married is normal.
I was 18 in 89, and until 92, I sexually propositioned every woman I met. It only worked like 5% of the time but I was making 20 propositions a week,so…