It's already been posted, but:
"Damn it.
Damn it.
Damn it."
And already posted, "Hold on a minute folks, let's not throw out the baby with the bathwater just yet." Night VFR can be very, very safe. Perhaps not as safe as day VFR, but a heck of a lot safer than we're doing at present. NVGs make an immense contribution to this, but more is needed to make EMS night flights anywhere near as safe as day flights. Twins and singles, VFR and IFR, hospital and community based, all seem to share the increased risk of night flight. If you look at the trend, the common issue is that for some reason the pilot failed at some critical task: managing the autopilot; maintaining altitude; in severe clear VFR and other WX conditions, the pilot failed at something that, as a rule, is accomplished in daytime. Physiology, ladies and gentlemen.