Why? Because of one magical feature:

However, long-time users agree: NX Studio’s Control Points feel different. They are slower, less responsive, and the color rendering is slightly more "Adobe-like" than the old 2.3 engine. It’s close, but the magic is dimmer. Nikon Capture NX 2.3 is a ghost in the machine. It is a reminder that software isn't always about "more features." Sometimes, it is about a single, brilliant interaction model (U Point) and perfect color rendering. Nikon Capture NX 2.3

You’ll see why we miss it. Do you have fond (or frustrating) memories of Capture NX 2.3? Did you master the "Selection Brush" workaround? Let me know in the comments below! it is about a single