I actually think the two worlds idea is pretty powerful when you seriously consider the goods that come through suffering and combine that with the Christian idea of a new heavens and a new earth. It's a view that not only offers some helpful ideas about why God allows suffering (though not a full account) but also ties it to something that is explicitly Christian; the eschatology of the Bible in regards to the new heavens and the new earth.
Here's a longer video with several other answers to the question of why God allows suffering. I hope you find it helpful. https://youtu.be/70T8mm0W2tA?si=qhwgKXouLsm3wmVS
My website https://BibleThinker.org