HerHusband was thinking very hard :

and quoted someone without attribution.

I think they look stupid when they are upside down (ground on top). I
put them with ground on bottom because thats what I'm used to and what
looks best.

and then added

I agree, but I suppose that's due to the way we recognize faces in humans
and most animals. We are accustomed to seeing two eyes on top and a mouth
below. So we tend to see faces even in inanimate objects. When the ground
is placed on top, it just instinctively looks "wrong". At least that's my
theory...

Does that cloud look like an electrical outlet?

LOL

As an aside, one of the purported reasons I read for the ground-up
orientation was that children see a face and try to feed it a nice meal
of paperclips. I'm not entirely convinced of that myself, but there it
is. Two other reasons which made sense were that pictures mounted on
walls with metal wires, and the metal escutcheons on the receptacles
themselves are the perceived hazards.

Apparently none of those were compelling enough for NEC to jump on
board.

[...]