What really amazes me is how slowly the Witnesses actually grow. When you consider that they are probably the most aggressive recruiting organization in the world, spending in excess of one billion hours per year recruiting, their growth is miniscule.Whereas the Catholic church, that appears to do no recruiting whatsoever, adds 13 million additional adherents per year.
There is that saying about catching more flies with honey - the WTBTS 'good news' of gloom and doom, serve us by selling mags or die just isn't that appealing. The Catholics don't need to knock on doors since they know that the good old tried and true method of public preaching, word of mouth, family, etc are far more effective.
Oh and I bet that half of those 'billion hours' are faked/lied anyway, and of the remaing half a billion hours half again are spent at MacShack, donuts shops, etc. Then the remaing half is spent doing the 'witness shuffle' down streets knocking on each not-at-homes for 5 minutes or driving from one end of the county to the other to make 'RVs' - also 90% time not-at-home. I used to drive an hour to the mall - made a call first to 'start my time of course! Then a call after returning from the mall - easiest way to 'make your time' as a pioneer. Movies helped too!