i strongly believe that the soul doesnt linger around after death.
at the very least not for too long
i think this happens because it needs some time to get used to being a spirit again, maybe
it may linger for a long(er) time if it has some unfinished business, and nobody realizes what that is.
i also think one shouldnt tell the spirit to stay after the person dies.....it doesnt turn out nice....

we all go to a better place, there is no hell....life on earth is hell or purgatory, we just try to make it better by loving, making nice memories and such.....