Yes, 'this' world is a storehouse of suffering, but the world at the time of the Garden of Eden was No suffering.
Thus, God's purpose for Earth is that Earth be like the beautiful paradisical Garden of Eden and be earth wide.
MAN, Not God, but MAN has dominated MAN to MAN's hurt, MAN's injury - Ecclesiastes 8:9
Because God will bring to ruin those who bring ruin to Earth - Revelation 11:18 B
So, to come back here again ( back to the future / Eden ) will be on a beautiful paradisical Earth.
A beautiful Earth as described in Isaiah 35th chapter.
The 'sword-like executional words from Jesus' mouth', will rid the Earth of the wicked and there will be healing for earth's nations, thus a wonderful place to spend eternity as God originally purposed for Earth and righteous mankind.
- Isaiah 11:3-4; Revelation 19:14-15; Proverbs 2:21-22.
With all due respect to your beliefs, history does not reverse itself and go backwards so we cannot go "back" to the way things were on Earth 6000 years ago, and that would not even be desirable. Nobody wants to live like that except some religious groups like yours. The New Earth referred to in the Bible is the Earth that will be transformed by the actions of humans who will build the Kingdom of God on Earth, but that Kingdom will be for living people and future generations of living people, not for people who have died and will rise from their graves.
The New Earth/Kingdom of God will not be brought by God or Jesus. It will be built by humans who follow the blueprint instructions revealed by Baha'u'llah. Earth will never be a Paradise because a material world can never be free of suffering, but it will be much better than it is now, after there is a
New Race of Men on Earth.
Paradise was intended to be in Heaven, not on Earth, and that is where the true believers will spend all of eternity.
`````````````````````````````````````````````````````
Isaiah 35th chapter are the Mt. Carmel prophecies. Baha'is believe that all those prophecies were fulfilled in the 19th century as can be seen by geography of that area, the transformation of the land.
Isaiah prophesied that the Plain of Sharon and the holy mountain, Carmel, would both be centres for the light and presence of the ‘Glory of the Lord’ in the
last days. He said:
“The wilderness and the solitary place shall be glad for them; and the desert shall rejoice, and blossom as the rose.” (Isaiah 35:1).
“It shall blossom abundantly, and rejoice even with joy and singing: the glory of Lebanon shall be given unto it, the excellency of Carmel and Sharon, they shall see the glory of the LORD, and the excellency of our God.” (Isaiah 35:2).
“And the ransomed of the LORD shall return, and come to Zion with songs and everlasting joy upon their heads: they shall obtain joy and gladness, and sorrow and sighing shall flee away.” (Isaiah 35:10).
Above Haifa, Israel, stands Mt. Carmel, proclaiming the Glory of the Lord has come.