We have exactly that choice...If we live our entire lives in a selfish and depraved manner without ever reaching a penitent self appraisal we will be consumed by flame to nothing when we face God.
On the other hand; if we accept Gods grace, and live out our lives in a manner acceptable to him, passing along our blessings and revealing Gods grace to others, then we will attain the the happy afterlife you speak of.
I do not think that means sitting on cloud nine, playing a harp like some sort of cartoon "living in the same place forever".
Instead, I believe that our afterlife will include participation in the divine nature of God. From there, let your imigination soar to the furthest reaches of a universe and a heaven where God has prepared both work for you to do, and a banquet that will never leave hunger in your heart.