Paul from Cleveland, your question does have something to do with learning that the WTBTS is all a lie, but I think you need to look at it from a different perspective. Yes, the WTBTS said you would never die, and learning that, no, you will indeed die, is not good at all. However, I know that some day you will overcome your fear of death. We are all born with it, and we all learn to accept death as a fact of life. When you're there, you might not regret knowing the WTBTS is but a lie. But, that is for you to determine.
I think it would be very sad if they kept you hooked onto the lies on another lie, the promise that you would never die. This is manipulation by fear. It makes life, the one you do have, very miserable. And then, Paul, you would one day need to face death anyways. In my personal opinion, the pain of seeing the promise unfulfilled, the pain of knowing that you didn't enjoy the present because "something better" would happen, that would be far worse than spending life knowing that you would die, and, therefore, you should prepare yourself emotionally and psychologically, and plan for the future so your loved ones would be better off once you're gone.
I hope the fear of death won't make you go back. That is for you to decide, of course.