We left for doctrinal reasons also. We were in it because of doctrine and we left because of it.
It was a gradual process, but there was one thing that stands out as a watershed point. The June 15/89 Watchtower and the Aug 15/89 study article discussed Ps. 45:16, "Princes in all the earth". These two Watchtowers say that the Ps. applies to both the faithful men of old and faithful men of today. The Sept 1/89 Wt study article applies this same Ps. to only the faithful men of today.
It's a small and relatively unimportant point, but it made us choose which one we believed. They couldn't both be right, obviously. It also pointed to a possible schizm in the writing dept. Once we gave our minds permission to doubt a Watchtower, the whole belief structure started to unravel.
Another eye-opener was that nobody around us seemed to notice the flip-flop. It really highlighted how well everyone was listening.
Cellist