There’s a strong argument to be made that healers should completely ignore dps and focus only on healing, interrupts, and stops. If you’re trying to weave in dps and miss saving one dps player during a boss fight you’ve just negated all the damage you’ve done for that entire dungeon. If you can get most of the interrupts and stops letting dps use their globals on more damage you’ll be contributing more to group damage than by pressing your own damage spells. Just casting Skyfury or MOTW at the start of a dungeon adds more group damage than every damage spell the healer casts during the key.