Will you still add me, will you still tag me, when I'm 64?

Birgerking/Flickr

Adults are typically grateful that social media didn't exist when they were teenagers -- that their Facebook photos and status messages date to their college years at the earliest, not their first years of high school or middle school. Would you retroactively give your 13-year-old self the power to permanently put anything he or she wanted on the Web? I'd sooner incapacitate him with arcade-prize finger traps, the unexpectedly hazardous technology of my youth.

What I'd never pondered, until a friend questioned me about it last weekend, is when I'll stop using Facebook. Assuming it endures as a company, will there be an age at which most people abandon it? Right now, I'm a light user who mostly exploits the platform to share links to my articles.

Some people in my "stream" do the same. We'll all follow the crowd.

As I reflect on the way most of my friends from high school and college have used Facebook in the past and how they use it today, I'd say that their activity is more often than not tied to life changes. A new "relationship status." A new job. A move to a new city. A wedding proposal, followed by photographs from the bachelorette party, the wedding, and the honeymoon. A pregnancy, followed by photos of the baby, her first steps, her second birthday, her last day of school, and her spot on the bronze medal podium after placing third in a state college swim meet.