It sounds like you have personal experience with pregnancy. Given that, I'm surprised that you'd say this as pregnancy is no picnic, From observing how it was for my wife and how it _permanently_ changed her body and health, I would take a years of regular work any day over pregnancy.

But speaking anecdotally as an ex-pat dane, the people I know would look at it the opposite way: it might stop them from _NOT_ having children, but it would never make them have children they wouldn't have considered already. I'm sure there are exceptions but are they statistically significant?

The benefit to the society should be obvious.