I use 6500K at home, very rarely do I use warmer than 4000K, anything warmer looks dirty to me these days. I'm finding a slow move towards daylight, supermarkets are dragging their heels, probably due to the British public inability to accept change. :)
Fine but they still don't want to cut holes in their ceiling to fit them!
*in your opinion. Look, everyone has there preferences. If you don't like them, then you don't like them, i'm not trying to persuade you to replace all of your lights with higher kelvin ones, i'm simply pointing out that homes DO have lights of this colour temperature and it can (and does) suit some rooms/people very well.
Showrooms and offices yes, houses no... I had a 6000k daylight lamp years ago and hated it after dark. It messes with your circadian rhythm. Best scenario is a light in the kitchen that's 6000k during the day but no more than 3000k after dark.
Au contraire, as i've mentioned you WILL have seen them in showrooms etc. It's common practice, especially if you look at under counter lighting, the majority of which usually comes in 5500k - 6500k. As i said, i have them in my home in kitchen and bathrooms - as do a good number of people i know. At night it creates a daylight-light which i think most would prefer - esp. in the kitchen - by far from "freaking you out" (lol)