[inciampati]

Maybe people who spend most of their working lives alone, staring at screens, are picking dark mode because it's comfortable, not cool. There is no one around to impress. It's ok if you don't get it, but that doesn't mean it's just a fad.

It's cool to be comfortable, and now easier. OLED screens invert the default behavior of a screen from light to dark. It'd be absurd to fight the comfort that this can provide.

[JustSomeNobody]

I WFH and can have pretty much any setup I want, and I prefer dark on light background. Certain colors are harder for the eye to see (blue is a big offender) and yet, we have UI designers putting blue on a black background. So, I use a lighter color background, dark-ish font color and I have a 15% brown tint on my glasses. Ahhh.. comfort.

So, I agree, it's cool to be comfortable.

[avian]

CRTs were default black, yet we went from dark to light backgrounds during their heyday.

[p_l]

Text mode terminals used black background, so did XY displays which used memory tubes. When graphical, bitmapped high resolution displays arrived, they nearly universally were white background with black text - but trivially switchable (starting from late 1970s)