You share it with over three million people every day.  You know that's the population of New Zealand?  What's Manhattan thirteen miles long? That's a lot of misery crammed into thirteen miles.  Read about this one guy.  Gets on the subway and dies.  Six hours he's riding around before anybody notices. Think about that.  Here's this corpse doing laps around Manhattan courtesy of the New York transit system people getting on and off sitting next to him and still nobody catches on. Three million.  That's too damn many people.