I read this a while ago which sums up the problem: <a href="http:&#x2F;&#x2F;www.nytimes.com&#x2F;2012&#x2F;07&#x2F;15&#x2F;fashion&#x2F;the-challenge-of-making-friends-as-an-adult.html" rel="nofollow">http:&#x2F;&#x2F;www.nytimes.com&#x2F;2012&#x2F;07&#x2F;15&#x2F;fashion&#x2F;the-challenge-of-m...</a><p>The most important thing I noted:<p>&gt;As external conditions change, it becomes tougher to meet the three conditions that sociologists since the 1950s have considered crucial to making close friends: <i>proximity; repeated, unplanned interactions; and a setting that encourages people to let their guard down and confide in each other</i>