We are just meaty puppets made out of endlessly recycled molecules. There's no need to search for immortality when the only way an atom can be destroyed is for a pretty big explosion to accompany that event.
As an atheist, I take extraordinarily solace in the fact that one day, one of the atoms that is a part of me today may be an atom in the piece of shit clinging to the ass of some elite as they frantically search for a particular type of scented, embossed, and "essential" toilet paper.
Big tissue don't want you to know this one trick.