Seventh Day Adventists are doing better, so are mormons. Catholics are absolutely kicking JWs ass. If you say they are preaching lies, the society has spent it's entire history preaching things that it would consider heinous apostacy now, and whatever you believe at this moment will be considered an apostate view in ten years time.
Think about this for a second. If the society teaches something that isn't found in the bible, but claim that it is found in the bible, then does that make them liars or pharisees or a false religion? No, it's just Jehovah gradually revealing the truth, and if it changes later then it is new light. If the seventh day adventists (who share many of the witness beliefs and have a similar origin) teach things that aren't found in the bible, but claim it is, what does that make them? False religion. If both of you are preaching things that aren't found in the bible, and then both of you change the teachings to reflect new understanding, and both of you have love and fellowship amongst yourselves, and both of you are preaching the message of god's kingdom through out all of the earth (and last I checked, they were winning on this front,) why is it that they are wicked and satanic, and you are the only one standing for truth (that is subject to change with the release of every new watchtower magazine?)
Don't you find it odd how much hate and venom your organization has for the world, and for anyone who disagrees with them? Doesn't that tell you something?
Use logic and reason, don't just regurgitate platitudes that the society taught you.