Having daughters makes you happier, survey says

Parents who have girls are much happier than those with boys, particularly when the children reach early adulthood, according to a study.

The contrast is especially evident among parents whose children are between 24 and 30 and plan to marry, as in China the groom's family is traditionally responsible for buying a home for newlyweds.

Researchers also found that mothers with daughters were happier when they became elderly than those with sons.