Earlier quoted context omitted.
True, however if you look in the European context, Southern countries have lower rates despite having lower standard of living. So the climate cannot be completely ruled out, it is perhaps one of the factors.
lower standards only applies if you think about money. In every other respect, life is more pleasant in the mediterranean than in nordic countries. Source: I'm from the mediterranean and I think life in California is shit, even if I make way more money than before.
Only if you have money. Otherwise there wouldn't be such a mass migration of youths from the Mediterranean moving for work in the Nordics.