I've always wondered about this bit. "And cast him into the bottomless, and shut him up, and set a seal upon him, that he should deceive nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season" Rev 20:3. What happens after the devil is let loose again? What do you guys think?

Did you not read the verses after that?

"When the thousand years are over, Satan will be released from his prison and will go out to deceive the nations in the four corners of the earth —Gog and Magog —and to gather them for battle. In number they are like the sand on the seashore. They marched across the breadth of the earth and surrounded the camp of God’s people, the city he loves. But fire came down from heaven and devoured them. And the devil, who deceived them, was thrown into the lake of burning sulfur, where the beast and the false prophet had been thrown. They will be tormented day and night for ever and ever.

Then I saw a great white throne and him who was seated on it. The earth and the heavens fled from his presence, and there was no place for them. And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books. The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what they had done. Then death and Hades were thrown into the lake of fire. The lake of fire is the second death. Anyone whose name was not found written in the book of life was thrown into the lake of fire." (Rev 20:7-15)

most likely we not even exist after 1000  years..but if we do i bet we living space becose earth is destroyed and here no air or nothing...thats my guess