A lot of us enjoy playing support characters. THATS OK.
I enjoy putting on Well and running Div and wear boots of the assembler.
A lot times those tracking heals have helped a weaker or new player get through a raid or encounter. LFGs can be… interesting.
Well isn’t over powered and if you don’t play right you can get killed in it.
So why do we run it? We like if. We enjoy it. It fulfills that healer power fantasy.
In short Well is popular because the power fantasy is popular. Not because it’s “mandatory”.
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Just my opinion, If someone needs that last little bit of healing to get them through an encounter, they need to fail until they can survive without it. Otherwise it sounds too much like "crutch".