Sure, we've all had experiences when the voice on the GPS thing directed us poorly. Mrs. BD and I have especially had those experiences in Europe. It can waste a lot of time, but sometimes can be serendipitously interesting anyway.
One time, in Sicily, we were directed through miles of dirt roads in lemon groves because the Euroland thing was set for "most direct route". Yeah, it was an "as the crow flies" route to some obscure place we wanted to hike with the Christian tombs carved into the cliffs.
I like maps for the big picture, and the driving tech for the details. Just last weekend, driving home from a fishing trip, I kept wondering "What town are we in?" I felt like "Where the heck are we, on a map? Where are we, on the planet?" We didn't have a clue, but WAZE got us home.
I think a combination of a map and a GPS voice are a handy combination - one for the practical and one for curiosity.
Why GPS will never make the road atlas obsolete