I think tuts are good for several reasons. One, for the artist its a self reference. Also in order to explain something to someone else you have to know it really well for yourself. Now from the fan/struggling artist/"guy in awe of your ability though you may sit in awe of someone elses" side of things, tutorials give us inspiration, insight into how your particular work is created and ideas of how we can do things. I use them all the time as visual "liquid courage" for when I'm approaching something I've never done before and feel that timid ultra-noob feeling. It helps me quell my doubts and gives me a starting place when I feel completely lost on how to proceed.
I was JUST about the pm you about doing a tutorial when I noticed your section with the topic at hand... You, sir (?) are amazing. This tutorial has shown me a LOT of how to work in my favorite style! Thank you so very much for sharing; not only your work, but your experience and knowledge as well!