We rarely have fog here, at least not anything thick enough to notice, but I remember once, driving on a mountain road in Northern California, or maybe Oregon, but probably California, and finding that I was above the fog. I pulled over and got out of the car for a while, and everything in either direction was thick fog, so either continuing or going back, it was necessary to drive into the thick fog. It wasn't so much fun driving in that stuff, but it was beautiful being above it, and looking down.
I love fog and have always felt it was romantic. Walks on a foggy beach with the one you love are good memories.