It's more like would you still love your dad, even if he wasn't going to leave you his billion dollars in his will? Some people become Christians just to get a ticket to heaven.
We need to make a very bold distinction between:
1) The idea of reward and punishment
2) The promise of resurrection, and life everlasting in the age to come
If one is operating from the perspective that being a Christian is about reward for having been part of the right religion; and/or avoiding punishment for having been part of the right religion, then this is deeply wrong and problematic.
But one cannot separate Christianity as a religion from the core confession of that religion. If I go to a restaurant and order a hamburger, but say I don't want the meat, bun, or toppings--then what exactly am I asking for? It's not like asking for a substitute, like hold the lettuce, or do some carb-free version with lettuce wraps instead of a bun, or a veggie patty instead of a meat patty. I'm ordering something and doing away with
all of it. Nothing's left. There's nothing left to even talk about or say at that point.
The Christian confession, the very core of our religion, is that Jesus Christ died and
rose from the dead. His resurrection isn't just for show, it is bold truth that death has lost its power, because what God has done for Jesus,
He is going to do for us and all of creation.
If the dead do not rise, then Christ is not risen. That is what St. Paul says. You can't separate the future resurrection of the dead from Christ's resurrection, they are intimately and inseparably connected.
If God is not in the business of healing and saving the world, then there is no Gospel. Everything in the New Testament is a lie. And Jesus was at the very best a martyr and failed false messiah.
That's why the emphasis that needs to be made isn't about life after death, but rather, the wrong paradigm of conceiving of the Christian faith as being about reward and punishment.
Christianity is not transactional, it is not about inputting the right things to get reward, nor is it about inputting the right things to avoid punishment.
It's not about "do and believe these things to go to heaven and avoid hell". That is problematic and wrong.
But Christianity very much is about God's gracious love for the world, and reconciling this world to Himself in and through Jesus Christ, and God's answer to the evil and injustice of this world with grace, forgiveness, and the victory of life over death by resurrection.
It is about healing, fixing, mending, restoring the world. God is setting the world to rights. The invasion of grace is the invasion of justice; and that invasion of justice means the unbending of the world; what has been broken and bent and misshapen is being fixed, unbent, and restored--God is bringing wholeness. Every mountain shall be made low, and every valley shall be lifted up, and the paths made straight.
-CryptoLutheran