FFVI and FFVII are the most acclaimed titles, FFX started in a highly advance city, FFXV is one of the best sellers of the franchise.
The first final fantasy has a dungeon in outer space and time travel plot!
If anything, FFXIV doesn't have sci-fi enough.

If you guys were talking about you not liking sci-fi, that would be fine, it's ok to not enjoy something.

The whole franchise of Final Fantasy is built on being the ultimate fantastic story, where all kinds of fantasy settings can encompassed in a single anachronic world in every single game.