But what else is it good for?
Slides are designed for projection, for this reason they lack tatitude as the slide moves fom near total transparency to 4.0D in not much stops. Thta shorcomming requires precision metering and sometimes using graded ND filters to prevent sky being blown.
Each fim has an spectral footprint, this is the way color is interpreted, many slides have an strong character, delivering a particular scene interpretation one may love or not.
In the past, many pro photographers wanted to use slides to deliver its commercial work because the slide is an absolute reference, with the slide they were telling how the image has to be. Instead color negative film requires an inversion and a dynamic range management before you have the image, so the photographer's work had to be interpreted by other people and that interpretation could not be what the photographer wanted.
Slides are great, but when projected they are incredible.