You know I have never played a game where healers (even in heal spec) had no damage spells at all. If I read your comment correctly, and you're suggesting that "pure healer mentality" means removing all attacks spells- well never seen that in any game and I would find that unplayable.

That need across games was was various reasons- solo content (questing or grinding), PVP and was often done by allowing healers to run different specs to have a lot of flexibility in their skills. In this game, well I'm definitely in the "healers should heal and DPS" camp.