This is the same kind of guestion I get ask at my flying school as I am only 1 of 2 full time heli instructors compered to about 12 fix wing guys when I make an approach down wind.
A helicopter is a very differant beast to a fix wing which just goes up along then down between airports, think of a heli more like a JCB it does a job be it heli med,underslung loads,public transport or just as an airborne platform to bolt things onto, helis go out and do a job rather than just go places.
As to the night flying thing all my night flying is done in singles normaly an R44 and the only real issuse is the weather with no SAS or autopilot you have to pick your nights carefully so you dont run into anything to bad, but theres nothing wrong with this time of year go look out your window and tell me if you can see stars.Alot of my night flying by the way is done on and off a NATO T of lights which in a reasonable area such as 2/3 of a football field is a piece of cake evan for a novice.
So yeah night flying love it oh and when was the last time in the UK you heard of a public transport heli crashing at night??