IMHO, roads and POI's do not change so much that it's worth worrying about.
If you update regularly, you're driving on data that's at most ~ 3 months old.
Except for a newly opened Bass Pro Shop or AMC Theatre, you won't miss much.
I asked a Toyota service rep about updating my in-dash map and she said...
"We suggest updating about every four years. Roads just don't change a lot."I find dedicated GPS devices to be more robust in programming and functions.
But hey, whatever floats your boat.
Update every 4 years?.......I like every 4 seconds much better.
Roads don't change much? That guy has been indoors far too long...they change every day. POIs too.
Lately road construction has exploded all over the country....more orange barrels than people in some counties.
New "spaghetti junctions" appear out of nowhere fast, to name one example, not to mention smaller projects.
Ever notice while driving that on your device the little symbol for your vehicle is suddenly traveling "off the road"
and parallel to the intended road, or even some stranger configuration? Say, somewhere 100-300 yards from the road,
or from an intended entrance or exit?
It's because that entrance/exit you now need was newly constructed and "they" don't know where you are exactly....
NOT much help when they say "TURN HERE", and there's no "Here" to turn onto.....i.e., there's no exit, it was moved.
You won't find professional drivers, or young drivers, or 20, 30, and 40-somethings using those devices---they all use smart phones with Googlemaps or Waze, or both. I would never let my children use anything but Googlemaps GPS.
It's up-to-the-minute not only on roads but also destinations and restaurants, stores, or wherever they're headed.
But you're right, to each his own.
But hey, whatever floats your boat.
One bad turn from a Garmin and you might indeed need a boat.
.