In my case, when is never! Why drive 3 hours south to ski a half dozen trails. My local hills are Pats Peak, Gunstock, and Ragged. I get more night skiing terrain out of Gunstocks or Pats Peak then all of Sundown has during the day. Beyond local hills there are plenty of options for me in VT, NH, ME that are within 2 hours. Not to mention that it is kind of pricey for a small hill!
Not everyone is prepared to descend into the fiery maw of Satan's own Staircase. I am happy you are satisfied with the substitutes available to you.