I used to like riding in big cities at night. Nothing like a cruise downtown on a warm evening, but like others mentioned, too many deer, elk, goats, sheep, moose, antelope, coyote, etc. on the road from dusk to dawn. It just freaks me out now. I'm always nervous at night.
Give me a nice warm (not hot) sunny day, with good friends, twisty roads and great scenery. Ahh...I can hardly wait. March/April is too far away.