dude, if you spent a month with a clone of yourself, you'd get
  on your own nerves. People who are like you (speaking in general
  "you", including me) will magnify the flaws you see in yourself
  and they will irritate you to no end. But people who are
  slightly more clever or smarter or slower or wittier or dumber
  or prettier or uglier -- ones who differences are on the same
  spectrum as you but at different spots, will be infinitely
  interesting because they'll remind you of who you were, who you
  might become, who you could be but never were nor never would
  be. That's what I think anyway. "