Benefits are highly regional. Where I live, the current latest sunrise is 8:06 am on December 5. I can't imagine a sunrise after 9am being very fun.
In Boston the latest sunrise is at 7:15am on Jan 2nd. However, the earliest sunset is at 4:11pm on December 6th.
If it were 8:15am to 5:11pm at the worst on either end, I know I at least would be less irritable.