Fathers tend to have higher incomes than men without children but childless men tend to be happier, according to research by the Dutch demographic institute NIDI, quoted by the Telegraaf.

‘Fathers earn on average 6% more than childless men,’ researcher Renske Keizer told the paper. The difference is probably because fathers are often breadwinners and have more ambition to earn higher salaries, Keizer said.
At the same time, men without children tend to be slightly happier than fathers. Fathers have less time to spend with their wives or doing their own thing, which they experience as a negative factor, Keizer told the paper.