When you scrutenize and break the scriptures down, when you look around you at every day life it can be very easy to lose faith of any kind, to lose hope that things will get better.
Initially when I left I went through the whole questioning phase...all were: why this? or why that? how come god allows this or that? I then saw a documentary on the Rowandan women and what these women had gone through - the atrocities were absolutely more than anything you and I could imagine. That is when I started questioning god. Why would he allow such horrid things like that to happen - he is supposed to be this all loving god and yet he has abadonned his people. I lost faith in the god of the bible/watchtower - or at least how I perceived him.
Once I stopped thinking of god in human terms then it fell into perspective. Once I stopped human-fying him and realised he doesn't come into the equation - it started making sense.