I don't think people who have children are acting selfishly or unselfishly. Having a child who'll be loved, to parents who love each other, is the important thing.
“When one by one our ties are torn, and friend from friend is snatched forlorn; when man is left alone to mourn, oh! then how sweet it is to die!”
“And opposite the bench, the dock, divided by a partition, with the women to the left and the men to the right, as it is on the stairs or the block in polite society.”