Question for people that think life is meaningless if god doesn't exist.?

I don't know if I quite fit into the group you address. I can pretty easily show that life sans a creator God is objectively meaningless. I don't say that an atheist cannot have a subjectively meaningful life. All that takes is a bit of luck and determination.

My purpose in heaven is the same as it is now: to model God's character in a loving relationship with Him. Heaven doesn't change that. Actually, heaven will intensify it.

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I don't much mind the fail. But I'm curious. How do you reason from an indifferent universe headed inexorably into heat death to an objective meaning for your existence?

Life without God IS meaningless. You don't need me to argue this for you; you've got the great atheist philosophers like Nietzsche and Camus (among others) to explain it.

Once we are with God, we can be fully ourselves, free from the influences of sin. We only really begin "living" then in much the same way that we only begin this life when we are born, and out of the womb. This life is small; it's merely another incubation period.

The God that created the universe, sex, fun, laughter, and love also created Heaven, and he saved the good stuff for Heaven.

We are to be the servants of God! We will worship him forever in eternal bliss.

Christians like beating up atheists with their "anti-logic" because they know it drives rational minds insane. Christianity is like a permanent membership to insanity and god is the "get out of the nut house free" card.