Editor's note: People like to whine about Facebook or take "a Facebook break" in which they swear to stay off the platform for a month and then come back in six days, but the truth is: each of our Facebook accounts is a digital scrapbook of our lives' biggest milestones. Births, deaths, marriages, new jobs, new pets and those times when our status changed from "in a relationship" to "it's complicated." We have hard-working Mark Zuckerberg, who became the world's youngest self-made billionaire at age 23, to thank for that. Get your Zuckerberg wallpaper today!