What's up with healers not healing?

[Granyala]

As someone who is trying to learn WHM now (I healed for 15 years in other games) I can tell you that for me anyways DPS wise the best I can do many times is get a few DOTS out. The rest of the time I am healing. Between people standing in bad. Me trying to dodge bad myself while healing. Tanks pulling huge and running off. My poor level 29 healing kit just does not afford me much time to DPS if everyone is going to stay alive.

That's quite normal in leveling content, especially if you are a genuine lowie with crap gear and not an alt decked in HQ crafting gear of appropriate level.
Don't worry, it will change drastically once you hit max level. You will be DPSing ~ 80% of your time, even during mass pulls, provided you have a competent tank at the helm.

Expert dungeons are ridiculously easy, of you go back to leveling dungeons you realize that some of them hit like trucks by comparison.

With 8-man content, it could be a case of one healer thinking the other healer will get it so that they both don't waste a cooldown.
With no form of voice chat, healers can't really coordinate with each other other

Unless we're talking savage or extreme, a tank needs a lot of time to die from auto attacks. If that happens, both healers were asleep at the wheel. "I thought the other guy would do it" is not an excuse, once the tank drops below 30% it should be obvious that the other healer has no intention of healing.

Coordinating is fairly easy. Just watch what the other is doing, you can see the casts after all.

[Mimilu]

Unless we're talking savage or extreme, a tank needs a lot of time to die from auto attacks. If that happens, both healers were asleep at the wheel. "I thought the other guy would do it" is not an excuse, once the tank drops below 30% it should be obvious that the other healer has no intention of healing.

Coordinating is fairly easy. Just watch what the other is doing, you can see the casts after all.

Could also just be a case of healers tunnel visioning while DPSing and/or waiting for oGCDs to get off of cooldown.
I'm a Green DPS, I like spending my cast times DPSing and leaving heals to oGCDs. There are a lot of people with this mentality and the game does kind of foster it.
We are also so far into the expansion that people are going to try different roles. With Tanks and DPS both having more DPS-focused gameplay, never really having to look at/worry about other partymembers' HP (sans a handful of mechanics), that mentality might bleed in while playing healers.