Even more, the classic concept of married couples having kids is now in the minority.
At least for me, local statistics show that the majority of children are born to unmarried parents; and only ~65% of school-age children are raised by both parents. So it's not even a case for exceptions, but a socially accepted, very common phenomenon.
"Although unmarried couples are now more likely statistically to have children than married couples – a reflection of the fact that they tend to be younger overall – most children are still being brought up by married couples, as they tend to have larger families."
At least for me, local statistics show that the majority of children are born to unmarried parents; and only ~65% of school-age children are raised by both parents. So it's not even a case for exceptions, but a socially accepted, very common phenomenon.