> But Sun reliably shows up most days.
Gonna need a citation on that, where I live in the Midwest there are legitimately times where I haven't seen the sun for 2 straight weeks. Not to mention some latitudes I've lived at where the sun doesn't get up till like 9 and is already almost gone by 4.
Like AZ, CA, Texas sure go nuts solarizing. But there are plenty of people for whom that's not really an option.