For me - they suck. I have a lousy sense of direction. Despite actively trying to improve it for decades I regularly got lost. Not lost in the fun-exploring-new-places sort of way - but lost in the fuck-me-going-to-miss-the-last-train-home sort of way. I used to regularly schedule in hours of extra time for "just in case" scenarios. I used to avoid unfamiliar locations and over-plan trips to extreme degrees. I never wandered off the beaten track in the middle of the day - coz I could easily spend hours finding my way back.
I now go to strange places with almost zero planning. I can just pick a random direction for a walk and be confident that I can come back again. They have saved me probably weeks of prep time and contingency time at this point, and have let me go to many places that I would have otherwise never have visited. They have lifted a huge weight of worry from my shoulders every time I had to get from A to B.
So for me google maps et al have freed me from the learned helplessness of traditional maps.