My perspective as an outsider is that you're missing another alternative. The members of the Governing Body started as rank-and-file, which means they were duped into believing. As they went up, they became familiar with the true way the organization works. When they became members of the Governing Body, they learned how things really are. And, they were getting older as they were going up the ladder. I don't think their eyes didn't open up. I do believe they are evil liars and manipulators.
For those of you who have read Crisis of Conscience, you might remember how Ray Franz describes that decisions are made on two thirds of the vote. Ray Franz describes how these people could impose a ban on transfusions, for example, while they still knew that some members of the governing body did not agree with the policy. So, are we really to believe they don't know what they are doing? They might get an occasional person who hasn't wisened up, but it is very clear for me that these people are simply benefitting from the operation, and they know it very well.
Just for the sake of comparison, Hitler must have believed that he was saving Germany, but he was insane. Mussolini thought he was doing things for the greater good of Italy, but he was stupid. But, did Stalin really believe he was "liberating" Eastern Europe? Could he think so when he sent his tanks to Czechoslovakia?
From what I understand, there is a whole hierarchy of men in the WTBS. Do you think branch representatives aren't aware of what really goes on? I don't know where the line between the duped and innocent and the wicked is to be drawn, and I am sure that you guys are not in the group of the wicked, but, inevitably, someone somewhere in the organization knows full well that this is all a lie.