Supposedly Jesus died to do away with the mosaic law and allow people to gain salvation even as inperfect beings, but the way the Watchtower does things you would think that never happened. I think the religion almost forces people to live double lives, they make so many rules and silly requirements that no one could possibly live up to the standards with the inevitable result that people end up feeling so guilty it adds stress and negativity to their life, making them even more vulnerable to lapses in judgment. This puts them on the guilt/repent/"vow to do better until the next time" roller coaster and this cycle keeps people occupied and not thinking about the failures of the organization itself.
If people had the freedom to use their own conscience as a guide then they could live a more balanced and sane life and would be less likely to crack and do really stupid things. And what if when people did make mistakes they were kindly helped instead of being judged, you know, like in any non cult religion.