Originally Posted by
Rilifane
Because they're easier to use. It's that simple.
WHM has always been the "easy, straightforward" healer. HP goes down, Lily (or the dreaded Medica II) goes brr. Job done, pat on the back.
SGE isn't far behind SCH and even surpasses it on 2 bosses except for the absolute top players but to surpass it you need to work more for the few % difference - beacon healing but dealing with fairy placement reset after Seraph/ Dissipation, spending a GCD on summoning it after death, AF heals being a dps loss, SS being 100 potency stronger but ground-targeted, only Broil slides & Swift as dps-neutral mobility, delay when using fairy skills back to back, flexible Aetherpact but comes with two weaves (unless you need to use a fairy skill to cancel it anyway) and delay, dps partly dependant on party burst alignment.
And AST ... let's not even start.
AST is strong but a huge mess of unsatisfying bloat with buttons like glorified Lucid Dream, split-for-no-reason Draw/ Play & MA & Crown Play and "feels bad" MA and we're back again to having to use LS during burst like before LS change in ShB. Now AST is the least mobile healer because SCH at least has Ruin II even if it's a dps loss.