"As a dream when one wakes, so when you arise, O Lord, you will despise them as fantasies."
The wicked have no real place in the world, just a blip in the existence of a structure vast and great.* Simply put: In the grand scheme of things they do not exist. The pain, suffering, and oppression they cause is real (or at least appears real) but only terribly temporary just like the riches and the power and the pleasures they seek. They will become just like their idols, lifeless and insatiable.
But when the Lord comes again in his full power and majesty, the wicked will fall away like they had never existed. All suffering, all pain, and all strife will pass like a bad dream when the Lord lifts his hand against them. In the blink of an eye they will be destroyed and swept away, forgotten like a dream in the mind of God.
But those who are in Christ will last forever. Theirs is the inheritance of eternal life. When God arises, they will remain with Him for all eternity. What do we have besides God? The Earth has nothing for us that we can keep, but the Lord God is ours forever. Hallelujah!
*phrasing borrowed from a band called Say Anything. Their lead singer, Max Bemis, recently became a Christian because of his wife (he used to be Jewish) and I've been enjoying his new album.