I think you're missing my point.
I said: "I'd gladly sacrifice that feature for a standalone mapping app on my own machine, so I don't have to worry about Google spying on me whenever I decide to go somewhere!"
What I was trying to say was that I would prefer a standalone mapping application (ie. one that ran on my own machine and did not contact Google or any other site to work).
It just so happens that since I do not have such a standalone mapping application, I do resort to using Google Maps. And when I do, they do happen to have an actual useful use for Javascript, which is to allow the user to scroll the map with the mouse. But I'd gladly sacrifice that feature for a standalone (ie. not browser-based) mapping application that does not phone home to some spyware company like Google in order to work.