Dying is similar to being born - your whole universe changed when you transitioned from womb to this world and the same happens when you die. In other words, they have cookies and chocolate there :).
The whole deal about spirituality is that one discovers that we are in fact immortal and that this life is a step of an infinity of other steps, before this life and after.
The other thing one realizes is that each individual is actually a facet of an infinite whole (some call this God, but it is actually You), or in other words - We are all One.
That's what all the religions and mystics have been telling us for millenia.