It's countries that have never observed it, while the orange ones have at some point in the past.
It's pretty obvious that it's a better idea the closer you are to the poles. For equatorial countries it doesn't make much sense.
More that the idea's stupidity becomes ever more obvious the closer you get to the Equator.
As to the question: No, duh. For some bizarre reason majorities - though not large majorities - approve of the practice. It is also my experience that late rising people are more likely to approve than early rising people - and they of course have the power.
