[ajdude]

The catch is that the sun sets in the evening while LEDs continue to shine blue light.

[fsh]

Most people turn off the lights at night.

[sparky_z]

But not at sunset.

[dingaling]

The "cosy warm light makes us sleepy" meme seems to originate in the use of candles for nocturnal lighting prior to the availability of electricity. Their colour temperature wasn't a scientific choice.