There are several things I like about physical maps
GPS devices take a huge amount of that away from you.
The question I have with data visualisation is whether they can take things too far? Isn't one of the most rewarding things following a line of thought and discovering something new? Would you be more convinced by a visualisation that gave you a high percentage of what you were looking for but, through your own efforts, you made the final discovery?
If you spoon feed someone the final answer do they gain understanding and do they buy in to the answer?
Perhaps it is a valuable skill to be capable of putting together a visualisation that leads towards a conclusion but maintains the polite fiction that the conclusion was anything other than inevitable?