All the constantly increasing intellectual burdens - that any smarter-than-average JW has to carry for WT cosmology just to remain tenable* - merely demonstrates to me is that, at its core, the supernatural aspects of the Bible simply cannot be taken literally...
...the logistical pretzel-twisting needed to maintain plausibility (particularly with things like the Deluge, and especially the WTS's New System) can't help but get to the point where it stretches credibility past the breaking point.
...
*...rather than just shutting your brain off and blindly trusting it all - something I personally was simply unable to do, particularly the older I got.