[The Bard Rocks]

1) A guitar built for me, to my specs, will have exactly what I (think) I want, just the way I want it.
2) It gives me a neat feeling to know that no one, anywhere, has one like I have.
3) I get to promote some lesser-known but just-as-good woods, something i am interested in, even though many others aren't.
4) It is a blast if you are a hands-on kind of person to collaborate with a skilled builder. You'll have an additional emotional attachment as a result.

And then there are the comments others before me just made, all valid.