So Confused453,
The reason why every religion in the world says something about the afterlife is because humans are fleeting creatures, and in our short bursts of life, we seek to find meaning in a truly meaningless world. Be that in religion, or in daily life. Our ultimate goal as mortal creatures is to shed the mortal coil, in any way possible. For some that is being immortalized in songs and books, like the great Achilles. For many, that is the promise that, if they are a good human in life, they will be rewarded in death. Some even still seek to eliminate the mortal coil in this world, an example of this is the endless research by people all across the world, as far back as any can remember, to find the "Elixir of Life". Humans are afraid of the unknown, and we, being meaning making machines, hate not knowing. In response to the unknown, we create realities that are completely false, but give us a sense of security about the unknown. Do I honestly believe that when I die I will be taken to some paradise to live for all eternity? No, not really, but the afterlife does not concern me too much, I am focused in the here and now. Perhaps when I am older, and closer to deaths door will it become more important to me, but for now I am satisfied being a good man on this world, and helping others who need it.