A common enough J W response . Certainly one that I get often enough, " OK so what do your apostate friends come up with as to the answers then? All you can do is tear down our beliefs with nothing to say better"
It is taken from Peter's words, "Lord who could we go away to, you have the sayings of everlasting life"...
When used by the Witnesses it conveniently leaves out the idea that all belief must be the truth, or it is falsehood, I say that one does not always have to know what is right in order to identify something as being obviously wrong.
The sites that talk about logical reasoning describe a type of fallacy "The Appeal to Consequence's of disbelief" that goes something like , " if I do not believe then I will be afraid and then I will be unhappy, so I will keep believing..."