If you are not a frequent user of printed products you may be in trouble when you need to reprint something old. If all you have is a mechanical (pasted up board) it is practically worthless. Commercial printers today require digital files (usually PDF, or a high-resolution JPG for photos) from their customers.
What is also bad is that you may have had a digital file that you sent to your printer originally, but you do not have it now. Your printer may not have it either. It may have been lost or trashed when his company merged with a larger one. Or he may be out of business completely.
While the migration to digital printing has had an adverse effect on buyers of print, it has provided a new source of business for me. I have been getting more and more requests to digitize documents and art from people who possess little more than a beat up paper copy of an old document from which to work.