Do people want heals to do less healing and enemies to do constant raid damage so you must be constantly casting healing spells or someone dies. Basically you don't have time to hit any dps buttons because you must be hitting healing buttons, that is how like wow works. When you compare something like ff14 to other mmos, the heal potency of what healing spells do are so much higher than other games and incoming damage is far less. They would have to make a big change to the battle system to allow for more healing to happen.