Gil doesn't really account for a whole lot in FFXIV. I'm not even sure if there are any achievements tied to making X amount of it. Gil, just like actual RL money, lacks substance. Your list of achievements and titles is really what measures your progress and leaves your footprints in the cement during your time playing FFXIV. There are also untradeable/unsellable acquisitions that contribute to this as well.

If there is anything that currently gives me a rush and a huge dopamine hit, it's winning a Fall Guys match.