First thing comes to mind is that this organization through its leaders are not witnessing the true and honest version of the Gospel teachings of Jesus Christ .
They are subjectively teaching/preaching a tainted version made up by the top controlling men of the organization, which I'm sure is connected to the proliferation and distribution of literature which these men publish themselves.
When Jesus said that no one knows of the time not even he, he didn't say a select few will know .
The other thing that bothers me is this organization promotes human ignorance on many levels, admonishing education or knowledge that mankind needs for its very survival..
There are many other religious organizations that do this as well but the JWS is just one of these organizations.