As a Christian, read John 3:16. We celebrate Christmas as the birth of God's son Jesus. The story is in Luke. Around Easter he dies on the cross to save the believers from their sins. On Easter he rises and goes to Heaven. I wish to believe that some where in the massive sky, there is a special place for me called Heaven.
I pray that my sin of suicide be forgiven. I also pray that I don't not have to commit that sin. I believe this for when I die, I want Heaven. If what I believe is wrong, I stand in good company.
As an Atheist, the son of God simply means the Sun in the sky stays longer. This is true in the Northern hemisphere. The Sun and longer days end winter and brings summer. When you die, there is nothing more. This includes suffering.
If you want fear, then try Hell. When you die, you go to a worse place. No thanks. The above option will be just fine.
In conclusion, three ideas for an afterlife. Heaven, nothing, or Hell. Two out three ain't bad. I believe in Heaven to avoid Hell. If nothing happens, great.