I decided to reword this.
The Old Testament has very little to say about what happens in the afterlife. Yet throughout the OT many worshipped and served God, even to the point of execution. So hypothetically speaking if heaven and hell were put aside, would you still follow Jesus?
Answers could be something like "no way, I'm just in this because I don't want to fry" or "yes I would continue to follow Jesus no matter what" to "as long as the church serves coffee and doughnuts, I'm in"
If there is no resurrection of the dead, if there is no healing and redemption for the world, then Christianity is meaningless. As St. Paul says, if there is no resurrection of the dead, that means Christ isn't risen, and if Christ isn't risen then we are a pitiable people with a false faith and worthless religion.
So from that vantage point, no. If death is the end, if literally everything Christianity is about is false, then there's no reason for anyone to be a Christian. Because that would make Christianity objectively wrong.
It would mean that Jesus is a dead, failed messiah. And at the very best it could be said that Jesus was a martyr who had some really good things to say.
Christianity is not special because of its moral teachings--you don't need to be a Christian to hear the Law preached. One can hear matters of the Law in many religious traditions and diverse moral philosophies. So there isn't anything particularly special about Christianity if Christianity is reduced to nothing more than a moral philosophy.
What makes Christianity Christianity is the Gospel, not the Law. Without the Gospel there is no Christianity.
As Jaroslav Pelikan once said, "If Christ is risen, nothing else matters. And if Christ is not risen--then nothing else matters."
Now, on the other hand, the point of Christianity isn't "to get to heaven" or to "avoid the hot place". So the criticism of a Christianity conceived in a framework of cosmic reward and punishment is deeply problematic and fundamentally erroneous.
But it really does need to be stressed that the Christian hope of bodily resurrection and the healing and renewal of all creation is essential. Christianity is meaningless without resurrection and the victory of life over death.
-CryptoLutheran