Depends on the time of year. Longest period of darkness falls on a day in December, Winter Solstice, this year on December 21.

might be a question of where one chooses to put their focus, i mean life is better right now by any measure you might care to name than it was at virtually any time in history?
[medium.com]

There definitely needs to be more Darkness in this world…

The color black does not exist. It is not a light wave. Somehings can absorb light leaving an apparence of darkness to our brain.

The entire rainbow of radiation observable to the human eye only makes up a tiny portion of the electromagnetic spectrum – about 0.0035 percent. This range of wavelengths is known as visible light. [energy.gov]

Technically there is no such thing as darkness, just light levels lower than the human eye can detect.
We only think there is darkness because we are insensitive, even inside a sealed can some waves of electro-magnetic radiation get through.

Just as there is no absolute zero, so no cold , only too low a level of heat for us to survive in.