I have a very multicultural background, but the dominant cultural view, at least when it comes to money, is Chinese. For us, living at home is not failure. Moving out without planning to start a family if you live in the same city as your parents is considered wasting money. You instead use it as an opportunity to save a pile of money and invest. How much of this is just cultural change? It isn't failure to launch. I…
Caucasian, US born male here. IMO, Western culture is less suited to many of the challenges of the modern world. I don't want to imply that Asian culture is somehow flawless, but there is quite a bit the west can learn if it wants to be efficient and stable in the near future.
My half-baked thought is that you can look at world population growth over time(https://ourworldindata.org/world-population-growth) and note that East and SE Asian population density has been higher for much longer than in the west. It stands to reason that either some aspects of culture have adapted to this, or that the population density somewhat results from a conducive cultural factor. Obviously it's much more complicated than that, but I hope I've made my point.
That said, I think there are forces at work which are putting special pressure on young people today. Whether it is related to declining testosterone, cultural shifts against traditional masculinity and success, negative information overload, cheap and ubiquitous entertainment and distractions, economic forces... I don't know. I think it's good to note that living at home isn't necessarily a bad thing, but there does seem to be something more insidious affecting our youth today.