It is interesting to see the degree to which XJWs locate themselves on a spectrum mostly tilting toward aggressive atheism. Obviously, this isn't everyone, but if the responses are at all typical of XJWs as a whole, then we have an interesting pattern.
It is interesting because these are people who went to church four times a week, if you include field service. That's pretty religious, by most reckoning. You might reasonably expect that people unhappy with the JWs substitute into a similar sort of religion: another new American religion, Islam, maybe, or even mainine Protestantism, given the relative market share. I mean, if you drive a BMW and you get sick of BMWs, you expect to substitute into something similar; you don't expect to substitute to a Chevy or Maserati.
My hypothesis, in case anybody cares, is that the JWs are not a Christian religion at all. What they are is a club for conspiracy theorists who happen to use scripture as their source text. Didn't have to be scripture, could have been pyramidology (!) or numerology (!) or Protocols of the Elders of Zion. We see this in every aspect of the JW ouvre: the Great Apostasy, Constantine's maneuvering, the interpretations of every apocalyptic paragraph to some important item in the JW history: everything proves everything else.
The important thing is that the JWs don't attract religious people: they attract people who aren't really serious about their own religion, or people who are unattached to any religion at all. When people become dissatisfied with the JWs, they go (or go back) to the nearest thing to JW-ism, which is atheism, generally speaking. Often, the anger of the XJWs also becomes focused on the source documents of the conspiracy theory: scripture.