For the many years in service you've done, you have probably run into almost every religious group. They, more than likely, were taught by their parents to accept the religion as truth. How many of those say the same things you are now saying? How many did you convince to leave their religion? I'm sure you found many to be nice and you wished they would accept "the truth" that you had. But if you talked with them a few times, you would find that they couldn't see "the truth" about their religion.
Each person has a reason why they won't leave their "truth". What is yours? Fear that god will kill you? There may be nothing after death? Only you know.
As regards the child abuse the WT hides - remember that the Catholic Church hid this also. They didn't clean up from the inside out, it took others on the outside to do it. And when it came to light, did all of the members of this church leave because really, how could God approve of such heartless deception? No, they stuck with it and made excuses. I think that when this abuse is revealed in the WT, many will still stay and find excuses for them. After all, didn't the GB just admit they are human and makes mistakes? Thousands of the same "mistake" result in thousands of children suffering. Is that really a mistake?