Depends how much riding to new places you want to do without getting lost. If you only ride places you know, or don't mind spending time lost, you don't need live maps.
As I said earlier, I still have a smartphone with me with offline maps so I can still stop for a minute and check if I am unsure of my route.
There is a huge spectrum of possibilities between being totally unaware of where you are going and following a route turn by turn and I kind of feel I have an higher than average awarness of where I am going and where are the cardinal directions.
