Much of Facebook's current popularity owes to user vacation photos.
That's one conclusion to draw from a new survey from Facebook called Sharing Life's Biggest Moments.
Facebook's data nerds dug into a representative slice of 200,000 major life events posted on the Timelines of users worldwide.
The verdict: Users add more stories about travel to their Facebook Timelines than they do "any other type of life event."
The older people get, the more they share vacation stories.
See the infographic, below, which takes a look at life's biggest moments by location.