Night riding is a blast, as is really fun if you live in a hot climate and head out at sundown. Getting away from the city and into the countryside with more trees is even better. Huge drop in temps, little traffic, humidity of the day has burned off, etc. Just invest in good lights and get after it. I would suggest to stick to routes you know because just like driving, everything looks different at night. Then again, some of my best night ride memories were with friends who I trusted (mistakenly as it turned out) to know where they were going.