I'll take an airship if it's right near me just to save 200 or 300gil.

But I won't go out of my way to take one.

Before I hit level 50 I would take airships and run / chocobo almost everywhere. It was my way to get into a saving money mindset.
Even now I try to think about the most cost-effective way to do just about anything.
I think that's why I was able to save so much gil. Just being careful about spending. Even the little things.

Have to start somewhere.