I fully understand not being able to realize this truth. I was that way myself until I accepted God's Gift of Love. Then, it is the Holy Spirit indwelling the believer that gives this knowledge.

For those who do not share in the reality of heaven, I can only say this: if you are right and I am wrong, then there is nothing lost. But if I am right, and you are not, you have lost heaven and being with God eternally.

We are certainly not here to only wait for heaven, goodness no! We are left here on earth to speak to others who were such as we were before the Good News was shared with us. Otherwise, God would immediately take the new Christian out of the world. But our work here is for Him, it is really our only purpose at that point. Looking forward to heaven in no way lessens this life work. It does, however, make it bearable, giving hope that this life is not all there is, and won't last forever.