Many of us might have a strong delusion that human after death might go to heaven if he/she was a saint or to hell if he/she was a sinner as per the holly books, but if we are to move away from the religious aspects and delve into the realm of science and spritology then there is no much realism to such concepts.
Some theories says that a spirit after death is given only two options; reincarnation or an afterlife but many religious experts believed that this afterlife either happens on heaven where a spirit becomes an angel or in hell to bear the burden of their sins and then moves to purgatory for redemption and is then sent back on earth to undo those sins they made more so to speak as per the Bhagavad Gita where it is said that Heaven and hell is on earth itself or the Holy Bible where it is said that Jesus walked on earth on Seventh day after his execution, but if more retrospectively speaking a human soul lives an afterlife on earth itself inside a graveyard or a morgue or a place they died in (if suicide or murder was the cause of death). So what exactly is afterlife? for a soul its like a void, I mean if a man died by doing something good he will get to be the watchful protector of his next generations and look over them but if a man was a sinner he will never be free and will be trapped inside that void forever. Now, many might ask me why did I said there is no true heaven or hell above? Well, let me be clear the notion of heaven or hell could be seen on earth with the reminiscent of the afterlife itself. If a soul is given a choice to repent or to cause mayhem and if he or she happens to choose the later then he/she might end up becoming an evil spirit and cause a hell for the people whom he/she had left behind after his/her death even in that state. Also it is said that it's up-to us humans whether we make our earth a save heaven or a living hell, a strong reference to AS ABOVE, SO BELOW.