Originally Posted by
Adrasteia
That's a consequence of Esuna/Leeches essentially being cost-free (aside from a GCD and a pittance of mana). If there's no major cost associated with it, there's no real choice associated with it, either: if a debuff is dangerous enough, you'll remove it with Esuna/Leeches. If there was a greater cost associated with casting them, (such as higher mana, Aetherflow, a charge-based system, a cooldown, etc.) you'd see more use of strippable debuffs, since it'd add an element of decision making into the mix rather than simply being a rote task for healers to perform.