Similarly, I'm now much more relaxed about taking random road trips to "wherever". I know I can find fuel, food, and bathrooms.
On the exploration aspect, I'm really amazed that people really trust online reviews when restaurants clearly try to mess with the process or angry customers try to tank places they've had one-off bad experiences with. I take reviews as just another piece of information, just like word-of-mouth or paper reviews were before.
I really don't get that attitude, and this might sound a little harsh, but if GP is really the stereotypical "epicurean" type who wants to experience the world, they should already know online reviews aren't gospel and can be incorrect. I don't know how one couldn't know that unless there is some other reason for not exploring places and such even when google tells you this place is 4 stars while this place is 3.
You can't honestly say a 4.9 star McDonald's is better than a Michelin star restaurant with a rating of 4.8, but it could (and probably does) happen.
In my city, ratings for Chinese restaurants almost inversely correlate with quality. The real quality Chinese restaurants have amazing food but absolutely shite service, and it's that terrible (yet oddly authentic) service that brings down their score.
Meanwhile the Manchu Wok (sort of like a PF Chang's maybe?) next door gets a higher rating.
For me, having that power to find my way home no matter how lost I'd get gave me the freedom to get out and explore.
You don't have to follow the GPS' directions. You could just use it to find which way to walk, then take whatever path you want. You can get a list of restaurants and then ignore the ratings.
My worry is that by removing all chance of variability in our lives, we become automatons.
Also, I for one miss serendipity.
It's interesting to me that you're liberated by having access to everything all the time. Personally I find it pretty constraining. It makes me feel like there's nothing to discover, no mystery, no journey. If I wanted to find the best restaurant, I wouldn't have to go out and explore the local options or discuss it with friends. The more efficient and correct way would be to just search for it in the database. There's no excuse for going someplace without knowing anything about it, since all the information is so easily accessible.
While yes, google maps has allowed me to always know where I am, it does so at the cost of defining a "correct" path to any destination. Any deviation from the "correct" way is no longer happenstance, but a deliberate inefficiency that demands explanation.