If you don't have anything wrong in your background and your situation is in good shape, don't worry too much about the denial. You'll get approved eventually.
We had same question before as you currently have. However, as doshexh said nobody knows the answer.
In 485 processing, more focus is in medical examination, fingerprint, address change, RFE response, employment verification, interview if required, etc. Therefore, the home address is extremely important for communication between you and USCIS. They typically send every request by regular mail.
Take it easy, Enjoy your life and Good luck.