I recently read an article about the fact that having children doesn't make people happy. Apparently the sleep deprivation, the stress of dealing with screaming children, toddler tantrums, school proplems make parents unhappy.
But really would you find an alien in your bathroom without children living in your house?

Or a Lego zombie between your flower pots (and spiderwebs)?

You wouldn't have a door for fairies to visit your garden either, now would you?

You wouldn't fill your washing machine with load after load of teddies, horses and bunnies so they can sit on the radiator for a day or two, right?

I don't know about you but this makes me happy, just for starters.