I find it amazing that many Christians, when presented with the idea that God might eventually save all of his creation, are shocked to think that God would be so "unfair" to them. "Do you mean to say that my ghastly neighbour or Hitler or Idi Amin might be in heaven with me? They don't deserve that."
Such Christians are like a modern day Jonah.
Jonah was so disappointed that God would forgive the citizens of Nineveh, whose behaviour had been so bad that God had previously threatened to destroy them, that he went away and sulked. Because Nineveh repented, God forgave them and withdrew the threat of destruction, and Jonah became angry.
What is there in us that makes us want justice so badly that we have no room for mercy or grace? To become Christ-followers we must first receive God's grace ourselves, as Jonah did after first being so rebellious towards God. Why are we then so determined that others not receive it also?
When people we know, and especially those we have been praying for, come to receive God's grace and forgiveness, we rejoice, even if their past behaviour has been horrendous. But the thought that someone who has not received God's grace and forgiveness within their few years on this planet might eventually be reconciled to God is unacceptable to us, especially if that person has been really bad.
Some Christians invent ways of accommodating a good future for unborn and very young children, or the mentally handicapped, or other special groups who have not come to faith in their lifetime, but to expect a "real" sinner to have a good future is just not right.
These Christians are certain that Jesus, who loved and accepted all-comers when he was here on earth, has now totally changed in character and has a very different attitude toward sinners when they move out of their earth-suits and into the next stage of their lives.
How do we explain that attitude?
Most Christians believe that "Jesus Christ is the same yesterday and today and into the ages to come", but are not prepared to extend that sameness to his love for sinners. If he loved, welcomed and accepted sinners while he was on this planet, will he not continue to do that, regardless of where they are or he is?
Where do we get the idea that a person's location changes God's love for them or his desire for them to be saved?
I prefer to be growing toward a God-like attitude to the eventual salvation of all, than to revert to my old Jonah days.