Think of it like this. When speaking and telling a story. You can tell someone the whole event in a few sentences and no details and be boring. Or you can tell the whole story with every detail, and still be boring. Or you can tell the story with key words with important detaisl and words that strike up a certain emotion.
Same thing applies to music. I think what makes a guitarist good is the ability to know how to strike up an emotion and keep people interested into their music. Being able to play at a decent speed is part of that. Can't just say screw you to speed and techinque, nor can you say that to being creative. Need an even mix.
I can't help it. When I get an idea that excites me it's as if I can't breath unless I make it real.
-Steve Vai
-Steve Vai