Even though it sounds insensitive, I don't frown at the question, mainly because I ask myself the very same question all the time. Once you're out and see things in hindsight it is a question that many ask. Even now when talking to one's still in I want to ask "how can you fall for this, open your eyes", but when you don't know, you don't know. And most of us have been there.
Since I was raised in it, I used to always ask persons "what attracted you to the 'Truth'." I wanted to know what was the appeal for them, because I wondered if I would have taken that path and been attracted to the message had I not been raised in it. I think that even at that time, when I was a True Believer, I couldn't really see what it was that was so wonderful to make a person make that kind of change to become one of us. (I did notice though that it usually attracted persons at a critical time) To justify this in my own mind I just assumed that because everyone else thought it was great, it must somehow be. And since everyone said how happy they were, I assumed they were, and so I must be also, even if... you get the point.
To answer your question, no. I can see how it can be taken that way, but I don't. It's just one of those things "you just had to be there" sort of things. Sort of like telling a joke that is funny at the time and in the context of the moment, but is not funny, in fact it is silly, and you wonder how you ever thought it was funny. Until you remember the context of the moment.