[Tade0]

Coming from a country where, comparing to Japan:

-Suicide rates are roughly the same.

-Fertility rate was actually lower for a time - currently slightly higher.

-People work considerably more hours per annum.

-Average apartment sizes are lower.

I take such statistics with a grain of salt.

I think that currently they aren't significantly different in this regard than the rest of the developed world.

My anecdata from southern and eastern Europe says that things like stable employment and housing are hard to come by among the Ys and Zs and these are both major hurdles towards starting a family.