The reason for the low birth rates in eg. Italy is probably not primarily because people want cars and vacations, but rather that society is structured such that if a woman gets a child, she have to give up her career and become a housewife. Therefore many women defer having kids or choose not to have kids.
In Scandinavia birth rates are relatively higher - definitely not because Scandinavians don't like cars or vacations, but rather because the society makes it easier to have children and a job at the same time (e.g. kindergartens available and so on).
(I'm not judging this, btw, it's a valid choice.)