Depends on the extent to which it is practiced. Consider the population statistics for Russia and Western Europe for example.
You have some statistics on the relative frequency of recreational vs. procreative sex in Russia and Western Europe? How was it gathered?
If the sex was for procreation, instead of entertainment, they wouldn't be having so many abortions, eh?
As for the European women, you could ask Freeper GermanBusiness ;-)
I have had a number of European women co-workers who have expressly described to me their deliberate decision to refrain from having children.
And I have talked to exchange students who talked about the casual in flagrante behaviour of many college kids over there. Couple that with any number of FReeper threads about the death of the European social welfare model, and the consequent necessity to import young laborers from the Muslim world, and...voila!
Anecdotal, but not made up.
Cheers!