You struggle to remember a world before satnav. Very likely you never lived in it.
Absolutely not true.
I used to be a sales rep 35 years ago, and managed perfectly well without a satnav, but I absolutely needed it when I moved student DD from halls to a flat in Liverpool on a busy Saturday afternoon last summer when there were protests in the streets and the police were closing roads at random.
I couldn't just stop the car and read a map.
I don't need one to drive to Northumberland or South London, but I do to drive round Liverpool.
When was the last time you drove round the middle of Liverpool, Sheffield, Leeds or Bradford?
The roads in these cities have changed so much and there is so much more traffic on them. The one way systems and multiple lanes mean that I can't stop to look at a map.
Traffic conditions vary so much that when I drive to Liverpool my satnav chooses a different route each time to avoid congestion once I reach the city. I don't need the satnav to get to Liverpool, but do for the city centre where DD lives.
I take my hat off to anyone who can remember complicated routes, one way systems and which lane to get into on multiple lane roads in cities they have never driven round before, but I don't have the memory of an elephant.
Also, when driving long distances my satnav warns me of road closures. I recall a drive to South Wales many years ago and due to a serious accident on the M5 I had to divert and go via the M69. Once off the motorway I had to keep stopping to check my map. A satnav would have made the journey much easier.