I can understand your pain, brother. Your spouse is supposed to be your best friend, but it would appear that her imaginery friend and a publishing company are more important to her. Her psychological warfare, invented and approved by the Watch Tower Society, is supposed to win you with out a word. However, it is just causing a casm and is the source of your depression.
I assume you still love your wife, and I can completely understand that. I think that a little psych-op of your own is called for. Remember; Jehovah's Witnesses advocate that the only way a person can achieve happiness is to slave for their organization. Prove them wrong!
Nature abhors a vacuum. When you left the religion you created a void. I like the suggestion about volunteering your time. Pick a good and humane cause to get involved in. Go volunteer at your local soup kitchen or homeless shelter. Then share all the stories of how you helped your fellow man and how it brought you happiness with your wife. Magazines that speak of a magical place and time in the future when there will be no hunger do not make the hunger pains of today go away. The fact of the matter is that Jehovah's Witnesses are heartless bastards who use the "kingdom" as an excuse to ease their guilt. Even Jesus fed the hungry (e.g. loaves and fishes).
The bottom line is you have to be happy. Then show your wife that happiness exists outside of that doomsday cult.