Study: Kids make parents happier -- when they move out

By  | 

(CNN) - Apparently only one thing can make you happier than having children is kicking those kids out of the house.

A new study from Heidelberg University found parents tend to be happier in old age than those without children -- but only if their children have moved out.

Researchers say it's because the stress of balancing childcare and work is replaced with a form of social support.

Something they say is crucial to happiness as we get older.