The o/p asked why people may retain Christianity after seeing through the falsehood ofthe WT.?
I have done that, simply because what I can see wrong about the WT does nothing th shake my basic belief in Christianity. I took exception to the doctrine that only JWs were acceptable and the time scale shows the 1914 to be unbelievable now... later on other man made teachings of theirs became obviously wrong.
Why should that shatter my belief in God? No reason to. I have no wish to debate with the diehard atheists on here , each one is entitled to their views and there is no reason to fall out over it.