to even ask the question requires a profound inability to hear the answer.
It's a silly question
These kinds of statements come across as condescending and intolerant. If there are some people who believe that there can be a "where" or a "there" in reference to "God", it is there belief, and it is not subject to the test of what you consider logical or acceptable. It just is.
And a discussion of this sort is never a waste of time unless all of the parties involved in it think it is. It may be a wast of your time, but the rest of us get to decide whether or not we think it's a waste of our time, regardless of whether or not it meets your criteria.