I don't believe in everlasting fiery torment either, but I am certainly not Jehovah's Witness. In my opinion, JWs and Mormons have some things correct that the mainstream church is missing, but both hold theological positions that are way to extreme to justify becoming JW just because of their standpoint on Hell.

But for certain, the doctrine of an everlasting Hell was an invention of the modern church as a system of control. There was no such belief held by the early church that I can find ample evidence for.