That is your opinion, you will jump 99% out of boredom. Not me, especially not if they redesign the maps well to include meaningful tactical advantages with jumping (either to reach certain places or during battles to avoid certain ground type attacks).
Jump IS needed in FFXIV to add another dimension to the world. Don't forget, it's coming in 2.0, not in the current maps and battles.
EDIT:
Added this quote
Claire Pendragon nailed a good point there. Same for me, when waiting I just don't "sit still". I poke people, walk around, etc. instead of being a zombie. Jumping is breaking your game experience but zombie people are not? Sorry, I'm not biting into that.
