The one big reason I would love to live in the past or have a time machine is to see a true night sky. Sick of the light washed-out and satellite specked one we have now.
There's a particular observatory in Hawaii that is supposed to be amazing.
I'm sure there's plenty of other spots!
Seriously. I moved here. Even northern lights can be elusive due to this (plus, I live in a city). And where I live, I can read outside at night so the best time to see dark is during the cold times.
But more to the point, there is a lot of light pollution here. The best places are inland and plenty of other places get much darker. If you want to check out dark places, I've linked a light pollution map.
https://www.lightpollutionmap.info/#zoom=3.67&lat=66.1877&lo...
https://www.lightpollutionmap.info/#zoom=3.68&lat=40.8496&lo...