Originally Posted by Seltzer

Technical ability isn't useless. What's useless is a guitarist who thinks he's the greatest solely because of his technical ability.

When you think about it, technical ability limits what you can possibly play. You might be able to think of a great melody in your head, but unless you can actually play it, you have a problem.

Of course, some people will never be limited by technical ability because what they want to play isn't difficult. In which case, technicality isn't as relevant to their playing style. But either way, technicality isn't useless. It's just less important for some people.