It&#x27;s all about lowering the stakes in social interaction.  It&#x27;s one of the reasons why Twitter became so popular yet people continue to be baffled by it.  Facebook has utterly failed on this front IMO.<p>Most people realize that whatever they want to say to their friends is almost always unimportant and ultimately meaningless.  This is how real life conversations work 99% of the time.  When you post something to Facebook you&#x27;re saying that whatever you have to say is important enough to put up on everybody&#x27;s news feed and stay around forever.  When you use Snapchat you&#x27;re saying that whatever you have to say is worth a few seconds of your friends&#x27; time and then disappears forever.<p>It also plays against the slow realization by Millennials as they&#x27;ve grown up that everything they do on the Internet is permanent and they need to be careful about it.  Snapchat let&#x27;s you do whatever stupid shit you want as long as you trust the recipients to not save it and share it.