In the movie Malcolm X, Malcolm needed Islam(or the sect of it that he found) at the moment that he found it. Later he found out that his loyalties were misplaced in the "Honorable Elijah Mohammad". After his faith was shattered, he moved on. But it had "saved" him when he was in jail.
I've thought that at times people find being a JW is what they needed at the time irregardless of whether it really being the "truth". I really don't think that way anymore. I don't see any good at all of someone naively following this cult.