All the Watchtower doctrines? Are you sure you would want that?
NTSA
Ok, it undermines THE only doctrine that matters;
1. that Jesus selected the JW in 1919 to be His visible organization.
2. See if Jerusalem wasn't sacked in 607, but rather 587 as everyone in the world except the JW beleive, then that means the chronology has the wrong starting point.
3. Which means Jesus returned in 1935 (I am not saying that Jesus returned anytime because in Matthew 24:23-26 Jesus was very clear in stating that we are not to believe anyone who says He has returned.... they are false prophets... and the light only grows brighter for the righteous, not false prophets ... for instance if I were to say Jesus returned in 1879, no reason for me picking that date, I just made it up, I mean it's not like this was being taught in 1919 when Jesus was making his examination or anything...
.....but if I were to say that, that would make me a false prophet!!!! No light getting brighter for me!!!)
4. And if Jesus returned in 1935, then the claim that Jesus selected them in 1919 is bogus
5. If that claim is bogus, then the JW aren't God's visible organization but instead some guys making a blasphemous claim, and all their other exegisis is reduced from the word of God's visible organization (to oppose it is to oppose God), to the same level as any other human. Which is mere commentary.
In other words there would be no special gaurantee that all your most deeply held and cherished beliefs are any more valid then any other argument from any other group of people who have read the bible alot.
Scary thought huh?
"Most people, sometime in their lives, stumble across truth. Most jump up, brush themselves off, and hurry on about their business as if nothing had happened." -Winston Churchill
The important thing is you only want to serve Jehovah. See, you can't serve two masters.
You will come to love the one and hate the other. If your beloved organization ever contradicts Jehovah, which is inevitable since humans are imperfect and Jehovah is perfect, you would have to have the courage to recognize it, and choose Jehovah. Not an easy task considering everyone you ever knew won't talk to you again.
But that is ok. The important thing is that you only want to serve Jehovah... right?
Coming soon.... "We don't teach doctrine, we just teach what the Bible says, it is just what the Bible teaches!!!"
followed by that great old classic "But where else could we go, nobody else is teaching the Bible the right way"