The future earthly paradise is supposed to be a calm, peaceful place where people can live forever in harmony with each other and nature, a place where nothing bad will happen, and suffering, death and destruction does not exist.
There is a problem here (well, there are several, but here's another). What about natural disasters? Easy-peasy to answer; Jehovah will make it so those never happen, right?
-We now know (or should know) that all of natures dangers have natural causes, and are not caused by Satan or God (or their minions). Earth quakes and volcanoes are (mostly) caused by plate tectonics, tsunamis are a bi-product of the same. Hurricanes, tornadoes, cyclones, storms etc. are caused by the sun heating up the atmosphere creating areas of different temperature and therefore pressure which in turn causes winds of various degrees of strength. Lightning is a bi-product of this (with a couple of contributing factors).
The universe itself is a violent place, with many dangers in store for life on earth. Although it doesn't happen too often, asteroids can crash down through the atmosphere at any moment and create havoc. Gamma rays from exploding stars can sweep the planet and eradicate most life in an instant.
And on and on.
The obvious answer is of course that in paradise, Jehovah will actually personally protect mankind from these disasters with his 'active force'.
-Did Jehovah have a firm grip of the continental plates when Adam and Eve lived? Was it his intention to hold that firm grip? Did he "let it go" because Adam and Eve sinned? If we look at scientific findings, there's nothing to suggest this within the last 6000 years or so; the plates have been moving for hundreds of millions, likely billions of years.
But even if we look away from scientific findings (as you do...); it begs the question; Why would God create the earth this way in the first place? If he intends to physically hold the continental plates in place with his 'force' in the future paradise to protect mankind from earthquakes, volcanoes and tsunamis, why not create earth as a massive 'block' in the first place, one that couldn't generate such natural disasters?
Of course, when it comes to the atmosphere, some believe (JWs believe this) that there was originally a water vapor canopy surrounding the earth (from which the flood waters came), and that such a canopy would both provide better protection from radiation, meteorites, etc., and also would see to it that heat was distributed evenly over the globe, so weather would be more stable (and I guess they believe that such a canopy will be put in place again in the future paradise to give the same protection). The problem with this canopy model is that (and I won't bother going into detail here, but here's a link) if put in place, it would create such a huge atmospheric pressure that it would be impossible to live on earth. Both the pressure and heat would be immense.
I guess one could say "Well - Jehovah can do anything, so there!"
OK, but if Jehovah can do anything, you should forget about the whole canopy thing (actually, you could stop thinking critically altogether, but let's not go there). There would be no need for the canopy; he could just create the rain necessary for the flood directly, protect earth in any way he wanted directly by stopping radiation and any asteroids etc.
"Yeah, OK - I'll just ditch the canopy hypothesis then. No big deal for me."
-But then why directly protect earth from already existing outside harm, when instead he could have created a universe with no harmful radiation, no "loose cannon" rocks hurling through space, and a 'rock solid' block of earth where earth quakes, volcanoes and tsunamis could not form in the first place?
Does the universe show that God once held it all firmly in place, and "let all hell break loose" because two people were 'naughty'? No, the universe shows every sign of always having been a dangerous, dynamic place, the earth has constantly (in a geological time scale) been hammered by asteroids and meteorites, the earth's crust has always been moving causing quakes, volcanoes and tsunamis, harmful radiation has always been there, storms and floods have been commonplace (although not global floods). 'Always' as in a time period far enough back (long before humans) so as to make the other argument fall flat.
-So if it's 'always' been that way, and must have been so even through the original paradise (if we for the sake of argument say it existed), why would the future paradise be any different? And why is the universe (and earth) created to be such a violent place to begin with?