Not really. Most ancient religions including egyptian, roman, and greek religions had a concept of life after death- hades.
there is life after death,just not on an individual and selfish basis,life after death is transcendent by nature,a conscious unit joins a larger conscious unit,nothing is ever less by dying…as Rumi the mystic put it,a mineral dies to be a plant,a plant dies and its former consciousness turned to an animal,then to human and further,to rejoin with the ALL that is