Why? Are you driving somewhere completely unfamiliar where you have no mental model of how to get there every time?
I just kind of don't get why people are so into it.
Because my 15 minute drive can be a 60 minute drive depending on traffic and there are 3 viable routes I could take.
Traffic changes while I'm driving and it automatically updates. An accident can occur on a bridge I'm approaching and I can get detoured and save actual time that I can spend with loved ones instead.
If I'm driving later at night, construction may block off my normal route and I can still get wherever I'm going.
I also get notifications for hazards like objects on the road, disabled vehicles, or events that are going to cause traffic. (I use Waze)
And the cost is zero. When I get into my car it automatically syncs and off I go. There's no reason to NOT have it.
A bunch of reasons, in no particular order: Having my phone visibly in-use makes it easier to avoid the temptation of touching it. I have a long history of playing video games, and seeing a "mini-map" is just how I'm used to navigating, even when I know the way. Having navigation that incorporates real-time conditions helps me avoid construction, traffic jams, or other miscellaneous issues. I have a pretty bad sense of direction, and it takes multiple trips to internalize routes, which doesn't happen because I drive infrequently (typically less than weekly, because I prefer to take the bus).