Reborn as an Elf, I Have an Infinite Lifespan?

An old man who died peacefully of old age, without children or grandchildren, is reincarnated in another world as an elf. Having never wanted much from life, he accepts his naturally detached temperament. After realizing he has a nearly infinite lifespan, he begins pondering the world and the meaning of life. But on this vast continent, opportunity and danger go hand in hand, and all sorts of intelligent races can be found: demons, goblins, dwarves, elves, and more. In his new identity, the old man is about to begin an adventure of his own on the continent of Remulia.