I haven't stopped flying in the zones since I attained flying near the beginning of hw, constant reasons to use flying once it is obtained. They did an exceptional job of it.

I much prefer ffxiv idea of questing and obtaining flying in each zone as you level as opposed to wows ridiculous rep. grinding only achievable once you hit max level. In this regard ffxiv trumps wow by leaps and bounds.

I understand why you are thinking this way though, in the perfect world, we would have unlocked flying at the start but ffxiv did an excellent job imo at the design to unlock each zone as you go and not holding off until 100% max lv is achieved like some others.