It's been several years since I was pulled over (amazingly enough - speed demon that I am) and I just told the cop it was such a gorgeous day I didn't really care. :)
That was basically my reason for speeding. I bought a new car during the winter and it was the first nice spring morning when the roads were clear. 5 AM on deserted roads seemed like a good time to wind er up to about 110 mph. The ticket was for 74 in a 55 mph zone.
These days 5 over is about the extent of my speeding.
There is a county road one mile south of my house where the Sheriff sets up his radar only on sunny, warm, and otherwise pleasant days. Two cars are always busy writting tickets.