Personally, I love maps. Sometimes, I just use them for inspiration. Frequently, however, I also use them as player handouts and setting builders. For instance, I found a map online I liked the look of and gave it to the players as something they found on a body. They don't know what it's to yet, and I honestly haven't written the adventure either.
As for use with miniatures, if I want something for the mins I either use tiles, draw on the mats, or occassionally blow up a regular map and print it out. I have no real interest in high quality tiles for a specific map because I'm not going to use them twice so they're a waste of ink. (With the exception of a generic area I can reuse, like a ship, because I can have multiple ships with similar deckplans.)
The service of picking a background and putting into a PDF, et cetera, would not interest me. I can create my own PDFs easily, and I'd rather just have the map.