I was only in for 10 years. However, I never feel that I 100% believed it all, even at the point of baptism.
I think after the initial period of 'love' shown on the part of the brothers, I must have only been a baptised brother for about 4 years when I knew it was all wrong on so many different levels.
I remember a sister saying to me "once they have got you under the water, that's when you see the real way they treat you". She was right. It all changed after baptism. I was more aware of the politics, the gossiping, the immorality, etc, etc.
And that's not to mention the way I was treated by those in 'respected' positions.
So for me, 6 years of torture! Toward the end it was unbearable. Knowing it was just a lot of b/s, yet sticking it out for various reasons.
So, how about you?