Re: You're holding it wrong!
This type of argument always confuses me. It's as if you don't understand how anyone could want something to tell you how to go somewhere. First, you might have trouble memorizing a longer route. Second, if the route changes, for example your map had you going through a road which has been closed, you might like something which can quickly calculate a new route rather than stumbling on it yourself. Third, if you change your plans while out, you might have a destination you didn't have when you left and hence can't look up the route in order to memorize it. For example, if you've really gotten lost and you now want to go home quickly or if someone asked you to meet them in a place you're unfamiliar with.
Perhaps you've never needed one, but there are plenty of reasons that others do.