I thought you were leaving the thread.
Since you’re still here, answer this question.
If the ‘Instinct’ to reproduce is so strong, why can’t Europe come up with replacement rates for their population?
Glad to see your quality of discussion improve! I hope it isn't a temporary phase.
As for the question, I don't know specifically... has their promiscuity dropped? Or do we have birth control, and an imposing culture that tends to encourage childlessness, and demonise motherhood, to blame? Birth control by hormonal contraceptives, might be another angle.
Strangely, European women who marry Indians seem to have many children. This based on about five couples that I personally know.