Forgot to add this to my earlier comment. JW's admit they preach a different good news, one about 1914 and the Kingdom's establishment, rather than the good news about Christ. Yet, their 1914 date is made on false assumptions, lies and deceit. The 1914 date relys completely on the accuracy of 607BC as being correct, yet they are the ONLY ones to use 607. All other references, scholars, encyclopedias etc say 586-587. If 607 is wrong, that makes 1914 wrong, 1919 and the faithful slave's appointment wrong, and the house of cards falls. They must keep that date at any expense. Perhaps you could ask your friend to prove 1914, since that's what they're really preaching. Should have some interesting conversations.
Also, that few other religions go door to door doesn't mean they aren't preaching. They are reaching far more people throughout the world thru their various ministries, than the JW's ever could. If, as the latest tract says, the end is really eminent, why are they building more and more new kingdom halls? Why aren't they using every means possible to get the message out to the world, using some of their vast wealth to spread the message via radio, tv, etc?
Peep