Living forever means living out the thought of eternity that God has placed in our hearts; meeting again one's believing loved ones lost through separating death; living in a world without sorrow; seeing our Lord who loves us and gave everything to unite us to Him forever.
But I see another meaning. Since we have this life and the next, we don't have to "have it all" now. We can live in broken and ruined bodies for a time; we can endure poverty and hardship for a while; we can face loneliness, heartache, and pain for a season. Why? There is a second birth--life in heaven forever.