Fame
As a glazier you're not likely to see your name in lights. Skylights, maybe, but not actual lights. But that's okay by you, right? You've got too much work to do to be bothered with supermarket tabloids with bad headlines like: "On the Cutting Edge—Giving Stars a Better View of Their World." That's likely to be, ahem, a pane.
You're happy knowing you're responsible for more windows than Bill Gates. And, unlike his windows, the ones you install never crash and rarely need tech support. Of course, your windows can only be used to view one's immediate world, and not the entire world.