Irylath, former clicker that L'd2 keybind and got WAY WAY WAY better
I used to click, too. I like to think I have higher-than-average dexterity and reactions, so for a long time it worked "ok". Honestly, I was pretty good, PvE'ed and PvP'ed pretty well, folks said I was a good player, blah blah.
One day I saw a PvP video. The guy was very impressive and talked about keybinds. I gave it a try. Holy crap. If I thought I had good dexterity and reactions before, switching to keybinds only amplified that. It's pretty ridiculous the difference it makes. I think back to how I used to be and just chuckle at that poor, silly newbie named Bovinity who thought he was good enough to get away with clicking. =D