If there will be a new heavens AND a "new earth" (Isaiah 65:17), this new earth must have a purpose. It makes sense that in the "restoration" (see Acts 3:21, Matthew 19:28) humans will live on earth. Besides, isn't earth where Adam and Eve were designed for anyway? This is our home.
But to simplify all of this, even if the Scriptures weren't clear (and they are) as to where we were to spend eternity after our resurrection "at the end of the days" (see Daniel 12:2, 13, John 11:24), the location isn't of PRIMARY importance or consequence. What IS important is that we have the gift of eternal life. That alone is just fine with me, and frankly I wouldn't care where God wished to have me spend it. It's life without end!!
Pralis