There is no heaven . So enjoy your life on the earth ?
The truth is you nor anybody really knows.....so why linger on it like some kind of threat? Religion is a crutch, as I learned in upper division, but what reason is there kick the crutches from the handicapped? If a person is following their religion religiously and not chopping off heads, not shoving it down my throat or forcing people into jihad or slavery, I don't seem to have any problem with them OR their religion.
Well that depends on what people call "heaven."
Einstein taught us that all matter is a form of energy, so since energy can neither be created nor destroyed, we have always existed and will always exist in some energy form. No reason to think energy souls don't exist, and quantum physics already tells us different dimensions exist.
"For physicists, the distinction between past, present and future is only a stubbornly persistent illusion." -Einstein