for two years i used to night flight almost every single week. I liked the following:
1. smooth air
2. no sun less weather
3. traffic is easier to see. less traffic on airports.
4. Not a lot of dr. killers in the sky at night. probably as sleep with the lovers.
5. i enjoyed sipping coffeee out of my thermos while enjoying the peace of the night.
6. the starry sky is nice to look at.
I didn't completely liked having one engine and not being able to find a survivable landing site, but then again i just lived with it the same way I do when flying over congested or heavily wooded areas without suitable emergency landing sites. In the other hand, I had the option to pull the chute
My most memorable and enjoyable flights were at night.