Until recently I was using PostScript and EPS regularly.
I'd use a PostScript program to step-and-repeat EPS artwork for a business form or raffle ticket, and apply consecutive numbers in the appropriate place. I'd then use GhostScript to render a final multi-page PDF for printing.
I also used it to send artwork to an imagesetter. Yes, they're still used in some sectors, and while the RIP software we had supported PDF, I had much better control of the machine using PostScript with a PPD.
