If you don’t need to be esuna’ed because it’s a dot or something that I can cover with oGCD’s then esuna is a waste, same as pressing a heal that costs damage when the tank can heal themselves without losing damage
Using your kit when you don’t have to just because it’s there isn’t a mark of a good healer it’s a mark of a healer who doesn’t understand their toolkit and how it interplay's with other jobs
But sure please go on acting like because the role quests spent more time drilling esuna into you than actually expecting you to be a half way competent healer that pressing. Buttons just because they exist makes you a good healer