I love healing and I'm a main healer since Cataclysm, in various difficulties and contents. I still completely disagree with the takes on healing vs. tanking in this thread. Sure, you won't go anywhere without a tank, but you won't go anywhere without a healer either (and if you go without a healer, it just shows that tanks shouldn't be the holy trinity in unison - a healer should always be mandatory, even in a 5-player-pro-group, the very rare ocassion where the healer is dropped in favor of more DPS).
So pretty futile discussion overall, as both roles are mandatory. In contrast to healers I just think that tanks are spoilt and a lot of them are quite entitled on top of that.
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This so much.
In properly formed, trained and tested groups it's different for every group member, but that's not what we're talking about anyway.
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Making them stronger doesn't result in tanking becoming more popular.