Can't really answer the homeland backstory, but the lifespan of your average Eorzean is the same as your average IRL human. Square-Enix released this during the Las Vegas Fanfest in 2014. They also said Elezen live a little longer (so if a hyur/roegadyn/lalafell/miqo'te/au ra lives to 100, an elezen would get to 120 or so) and have a slightly longer "teen" stage of their lives. Imagine if being a stereotypical whiny teenaged lasted from 13 to 25. Dear. Gods.
The life expectancy is however, much lower because of all the various dangers that are out there for the common person, like monsters, war and poverty.
The life expectancy is however, much lower because of all the various dangers that are out there for the common person, like monsters, war and poverty.
