WTH can't I use Kelvin?

[petro]

THis is already a WTH, closing and I’ll attach it when I find it.

WTH is light temperature not in Kelvin?

Kelvin is the go to method for everything color temperature for the vast majority of users. When you buy a bulb, it gives you the color temperature in Kelvin. Why can’t I set bulbs by Kelvin? (In the UI). The visual representation of a bulb should be in Kelvin.