The thing is this....the doctrines aren't so bad, in fact they are much better than most..Here's a list of a few.(not saying I agree with them all, but better than the rest)
1. Jesus is the son of God, not God
2. A paradise earth is coming
3. We are in the last days
4. the kingdom is a government
5. soul is the entire being
6. spirit is the impersonal life force
7. no Hell but a permanent death
8. the dead are in Hades, the common grave
9. there will be a ressurection of heavenly and earthly individuals..
The thing is the WT has gotten power hungry. And they refuse to change on old tired prophesies that are really wrong. They refuse to apoligize for the way their incorrect doctrines have destroyed peoples lives. They insist that their ideas and theirs alone are good and that you have no right to a different idea...or you are disfellowshipped. So they are really saying they are the mediator between God and man.