The devs want healing to be widely accessible without realizing the problems of doing so:
The enjoyment of the healing role thrives on punishment aka resource management.
Used all of your CDs incorrectly, you'll be punished (nothing for the next TB or raid wide).
Used burst healing here when you could've regen'd instead, you'll be punished (no mana).
Got too greedy and dps'd here instead of healed, you'll be punished (death/wipe).
Its strange, but this is something we actually enjoy. We like having to choose the right cooldowns, and manage our mana and squeeze as much dps as we can while keeping the party properly healed.
The lack of punishment not only makes the role unfun, but it doesn't let newer healers learn and it also locks the devs into making the current content we have in normals and all the "difficult" content in extremes and savages.
I didn't get to where I am as a healer through hand holding. I got here through massive pulls I wasn't prepared for, undergeared tanks, dps who stood in fire, wipes, deaths, OOMs, nonexistant cohealers, and me hard carrying a run as if I was Atlas holding up the world.
Did I get salty on the way? You bet your gil I did! But I also learned and had fun doing so.