Agreed, I've been a user of Clique + raidframes since AQ came out, no damn kids on my lawn muttering about them newfangled keybinds will get me to change.

Hassles aside, clicking vs keybinding is one of the oldest debates in the trade, and both can be extremely effective. I find CTRL / ALT / SHIFT + Left/Right/Middle buttons gives me 9 spell options, thumb buttons add a couple more. Outside of that, there aren't many more spells you actually cast regularly. Anything with a lengthy cooldown like PI and DH can be put on action bars, and so long as you keep your setup consistent, it works well across multiple chars. That being said, I do keep forgetting about Binding Heal.

ie, I have left as ctrl+ left as a fast heal, so flash/LHW/regrowth/FoL etc.
alt + left is a big heal, so GH/GHW/HT/HL and middle click does renew/PoM/riptide, right click is for shields or aoes, so PoH/CH/PW:S/or even bubbling people pulling aggro as a pally tank.

Took me a while to learn a long time ago, but now it is all second nature, all I have to do is hit modifier + mouseclick and whether I be on Shaman/Priest/pally or whatever, a useful spell of the right general type appears. All you need to do is click on the raidframe and bang, healed.
I have had friends use both that and keybinds, and most prefer clique, although the learning curve is a little steeper to start as you need to memorise your bindings rather than just look at the pictures on the screen. Older people do find it harder, but then they also don't tend to play multiple alts.