Just as a side point - I always had a curious feeling about "the tree of life" as per the JW explanation.
The "tree of life" in JW theology imparted essential immortality, but you had to keep eating from it forever to get the immortality.
This would logically imply that the tree of life itself was immortal - so that Adam & Eve could eat from it forever, had they not been sent out of the garden with angels at the gates to guard it.
However, JW teaching says that it was NOT immortal. They clearly teach that it was destroyed in the flood.
There is also (for me) a rather illogical conclusion about JW Garden of Eden theology - the dichotomy between the tree of life and the tree of knowledge of good and evil.
The tree of knowledge was a "eat from it JUST ONCE, and have knowledge of good and evil FOREVER". It's effect was permanent.
The tree of life was the opposite - if you don't eat from it practically EVERY DAY, you will lose your life and DIE". It's effect wore off.
It just always seemed to me that this contradiction was somehow illogical - as well, of course, of the seeming mortality of the tree of life.