Why not?
“Hitchens was an atheist. They don’t get into Heaven.”
Why not?
My Bible doesn’t teach that people who believe themselves to be smarter or better than God are invited to spend eternity with Him.
By your own choice, and your own actions, you have already shown God that you find His presence intolerable.
Ergo, you go where there is no God.
That's free will. You get to choose; and you get to experience the consequences of your choice.
Pretty simple, actually.