Gweedo,
You wrote: So long as they didn't eat of a certain tree they would have been allowed to live forever. They were initially granted eternal life ...
You read the story a bit differently than I do. Apparently, because you understand the words "eternal life" differently than I do. You read the story of Adam and Eve as saying "eternal life" was something Adam and Eve already had, and would continue to have so long as they stayed away from that tree.
I read it as saying that "eternal life" was a gift God said He would give to Adam and Eve if they stayed away from that tree for a predetermined, but unmentioned, period of time. If they had managed to do so, God would have then allowed them to eat from the tree of life. Doing so would have then made them immortal, something they obviously were not, since we know they both later died.
The difference in the way we understand the story comes from the different ways we understand the words "eternal life." As a former JW and a nonChristian, you still have the JW understanding of "eternal life." JWs say that in the new world, even after the 1000 years have ended, some people who have been given "eternal life" might still sin, and when they do God will then ZAP them. This kind of "eternal life" does not sound very "eternal" to me.
As a Christian, I have the Christian view of eternal life. "Eternal life" to Christians means "immortality." (1 Cor. 15) Having "immortality" means a person possesses within themself the ability to live forever. Adam and Eve were able to die and so obviously they were never given "eternal life" by God as Christians understand it, immortality.
You wrote: There is a big difference between the little bit of suffering I would allow my kids to endure and what God allows.
So you admit that you would allow your children to suffer for a while in order to learn valuable lessons or to achieve a greater good. Let's say, for instance, they had to undergo a long painful surgical procedure in order to avoid much longer and much greater pain later on in their life. Then you would most likely allow them to suffer for hours, or days, or weeks, or maybe even months. But if God, with our eternities in His view, for very similar reasons, allows some of us to suffer for similar or, in some cases, slightly longer periods of time you condemn Him for doing so.
The fact is, someone who didn't know and understand why you were allowing your child to undergo a very long and very painful surgical procedure might also question your love and compassion. In the same way that you now question God's.