Golf:
Not at all a stupid question and I can not add anything to the great answers already given.
But about the insulting comment: I can only think that someone is overly sensitive to the notion that without the WTS and Jehover life is empty and meaningless. When I was a little girl and heard about someone being disfellowshipped, I got this mental picture of a tragic, depraved individual in rags, with bloodshot eyes, sitting in a dark, dank cave somewhere, smoking something vile and mumbling incantations to Satan. These images have been purposely implied by the brainwashing machinations of the WTS. As I have said before, the most frequent question I got from JW's after I left was "if this isn't the truth, then what is?" I didn't know - and I still don't - but the WTS sure isn't it.
As Barbara Harrison titled a chapter in her JW book - "The Lure of Certainty" - JWs have been conditioned to need - desperately - to have some inside track and feel superior to others. They just have to KNOW - they are uncomfortable with an open mind. It feels too ....................empty.