I really wanted to leave this behind on the reply I gave here, but... Like always, I seem to be unable to stfu. So here is my reply.
I can heal while I move. I just run and click with my mouse. ONE click with my mouse. Then theres a shield, or a renew or a PoM.
Oh right you are a paladin. (but I'll bet your priest can benefit)
Well, how do you heal people? Ill tell you: you click on the portait of the raider who is in need of a heal and then you click on the heal you want to cast.
Me, I click on the portait of the raider I want to heal.
Notice how I didnt do half the stuff you did? On each frikking cast? That shit adds up.
Want to squeeze as much healing out of yourself as you can? Use an addon, it is faster. Personally I use healbot.
And yes, I've healed with no addons, and it makes you a bad healer.
Let me offer a comparison:
You want to go from point A to point B. Using no addons is like running there, using an addon is taking the bike. And your argument is this: "sometimes there is a patch and the wheel falls of". (then you put the wheel back on an ride the bike again) and your other argument is: "a good healer I know performed worse when he used a bike, he fell over and stuff." That just means he has to learn to ride said bike.
Using an addon makes sure that your heals come out whenever you want them to. Using addons makes sure that you can worry about your class mechanics and the fight mechanics. Using an addon makes you learn the game better, because your teammates will not die due to your heals being slower.
If you want to be carried through content by your raid-group, that is fine. Go ahead enjoy. If you like being a worse player because of some self-imposed rules, be my guest.
I can't say I blame you. I tank in leather. You see, when I tank in leather I am at the same level as druids, and it makes me understand the game a lot better.
AAAAAAnd if someone uses macros that they have cpoied/pasted from the interweb, and then claims that addons are destroying healers understanding of their class mechanics... I do not know what to say other than: THAT IS JUST LIKE A FRIKKIN ADDON. you are using tools you did not create (and are just as much a part of the 1s and 0s that makes wow... Just like addons are.), to do the job you want to do. If you are using “target=mouseover" types of addons, you are frikking using a non-pretty UI-addon.