Quote Originally Posted by Seera1024 View Post
I haven't found any huge reason to have flying on the maps once the MSQ takes you away from them.

I have them on my main and I've got an alt that's only gotten a few of them and I've not been terribly inconvenienced by not having flying unlocked on those maps. And my alt has completed all currently released MSQ and is waiting for Endwalker to release.
Mostly it's useful if you're a crafter/gatherer and want to be able to gather materials for crafting gear and such (witness zipping around to gather things to make Exarchic gear for your alt jobs or whatever), or if you run treasure maps with any sort of regularity. Having flight for those is useful (in the case of the maps) or even necessary (in the case of gathering, as some gathering nodes cannot be reached without flight).