Because artwork has its tedious bits too.

Look, finished art is what it is, alright… you can get around if you know how to use InDesign, right? Well… sort of, unless you’re Matt and you’ve been using InDesign since it was a baby beta. Not to mention Illustrator and Photoshop since version 1. C’mon! You can play around with these programs all day, batting them around like they were some kind of chew toy, but we all know that serious
graphic artists KNOW how to use them and can make something work in one move, where an amateur is going to take seven. Seriously, get a grip… get Matt to do your finished art and the printer will thank you, personally.
And maybe give you his firstborn, you never know.
What do you do with a firstborn?