I used to subscribe to the charcoal is so much better theory and that is all I cooked with. I finally bought a gas grill so I can grill something quickly when needed, thinking I would still use the charcoal mostly. I used it one more time, and frankly, I think most things taste the same or even better on the gas grill. I believe it is in the way you prepare the food and what you are cooking, not what type of fuel you are creating a flame with.
So suck it all you charcoal worshipping people who fool yourselves into thinking it is better because you get a charcoal flavor. If charcoal flavor was so good, we'd all be munching on bricks of charcoal!