Question to healers

[Reinha]

I have been noticing that more and more healers are letting the tank stay at lower and lower HP so they can DPS. 50% is fine. Most dungeons don't have attacks that can kill a half life tank. 20% and less is what I'm seeing more of.

My question is why? I want to hear the points of view so I can understand.

(Note: that very rare times I'm watching the tank die, very rare)

When a crit can heal more than 50% of the tank's health, it reduces overhealing to let him/her drop below 50%. Essential Dignity can heal over 80% of a tank's health, so why let that go to waste?

Well, I do it so the tank freaks out and pops some cooldows.

Oh and this too lol. The experienced tanks who already know their cd's tend to not be afraid of dropping low, but the tanks who think all they have to do is show up sometimes get spooked when the healer isn't babysitting them.