I like books with maps in the front, and since you've found a way to a publishing website that primarily focuses these days on fantasy and science fiction, there's a good chance that you share my opinion. Although I'm not a reader who spends hours pouring over the maps at the front, trying to chart out the course that the characters took, or catch the author in a continuity mistake regarding the reasonable travel time between two cities, I do consider a map in the front as a sort of mark of merit. If the author went to the time and trouble to have a map included, then there's a better chance that it's a book I'm going to want to read.
One of the distinguishing features of the speculative fiction genre in its published form is the maps. Avid readers of fantasy and science fiction are known to pour over the maps included in the books they read, maps describing fantastical worlds and universes in vivid detail. It was perhaps inevitable, therefore, that I would at some point be obliged to create maps to go along with the stories I've written or am in the process of writing.