That's wrong in so many levels. A healer is not a DPSer who has to weave heals every other time. Dealing damage is accessory when playing your role, not the core aspect of it. The same is valid for tanks. Only bad tanks behave like DPSes that focus aggro. Tanking is about control and mitigation.
Your problem is your approach, that puts DPS in the equation with the same weight as everything else. That's a DPS mindset, not a healer (or tank) mindset.
