Has anyone quit healing?

[Seraphor]

Thing is, healers have to be viable for when everyone is executing mechanics perfectly, and therefore only taking bare minimum damage, but also viable for when people are failing mechanics and getting hit. You're there to hold the party together through mistakes, not just a piece of a perfectly tuned machine. So this ideal healer scenario where the damage is enough to warrant full time healing is never going to happen, because you can't expect 100% performance from any party, not even for Ultimates, and therefore can't tune the fight to this unattainable standard without leaving room for additional damage, so it necessitates healing downtime.