I have night sights on only one of my guns, a Springfield 1911 ... my house is rarely so dark that I can't see, but the night sights have one huge advantage for me; our bedroom is pitch dark, so the glowing sights on my nightstand let me find and index the gun quickly without fumbling or perhaps even dropping the gun because I don't get a good grip ... I did just put Mepro fiber optic sights on my Kimber Ultra, vast improvement over the all-black metal ones it came with ... got red in back, green for the front, the contrast really helps ..
"The gun has been called the great equalizer ... It insures that the people are the equal of their government whenever that government forgets that it is servant and not master of the governed." --Ronald Reagan