Reason #62: Because Its Members Believe God the Father Was Once a Sinner
I ran across this video and it blew my mind. Portions of it were filmed at the April 2009 General Conference of the LDS Church.
For more information, see The Mormon Mirage 3rd Edition: A Former Member Looks at the Mormon Church Today (Zondervan, 2009). Also available as an audiobook and as an expanded-text E-book for Nook, Kindle and other reading devices.