If you use Facebook as a proxy, you can actually see that you max out on friends when you are in late teens to 20&#x27;s and then its downhill from there.<p>Stephen Wolfram (mathematica fame) did a deep dive into the numbers and there are quite a bit of interesting insight..<p><a href="http:&#x2F;&#x2F;blog.stephenwolfram.com&#x2F;2013&#x2F;04&#x2F;data-science-of-the-facebook-world&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.stephenwolfram.com&#x2F;2013&#x2F;04&#x2F;data-science-of-the-f...</a>