Sure it is more dangerous, like driving a car at night is more dangerous or like flying an airplane at night is more dangerous or jogging at night is more dangerous. All these activities can be performed safely at night though.
It is apparently very important for you to believe that with regard to cycling. Fine. I hope it works out well for you. Relatively speaking, however, choosing to ride at night recreationally is not IMO a good bet. If night riding is what is needed to make your living or something else critical to your existence, I can only say be careful and good luck. Different strokes for different folks.