Originally Posted by
Gwenkatsu
Because the Sci-Fi technology sucks.
When Garlemald attacked Eorzea with battle mechs and laser guns, they were repelled by axeman and magicians. When Garlemald threw a moon(!) with a terrible demon inside at their enemies, it was repelled by a guy with a staff.
When Alexandria's Star Wars Army attacked Shaaloani, they were repelled by some cowboys with rubber bullets /s/, and a guy with a lance.
Why would the classical Fantasy population want to use a technology they do not understand, and which is proven to be inferior to their axes and fireballs?
That being said, I'm absolutely ok with some level of Sci-Fi in FF14 - Magitek, Allagan, time travel, and the like. But a future mega city with neon lights and Starbucks? That's just a big no in my book.