Interesting how many different thought patterns.
Usually I dread getting up so early, then I see the night ( I leave about 5-5:30)... After a mile or 2 I'm really glad I rode.
If I try to go fast (for me), well I usually do go as fast as if I tell myself to just take it as it comes.
Sunrise is always cool, Sometimes I'm in an area where the trees block the view, but it's still such a cool part of the day.
I have a bit over 10 miles rural highways, then 10 miles of new riverside green way, then 2 of upscale neighborhood and boulevard... Then about 2 miles of dense urban roads and traffic.
I get the willies at 1 intersection in the rural area and about 1/2 of the urban part else I feel are low risk, especially with lights on.