Editing is part of it, but also by keeping your raw files, the image never deteriorates by editing or saving. All the information is always there in the raw file whereas jpegs deteriorate if you save them too many times. Actually every time but you may not notice until after saving several times. This can be avoided by saving it with a different title each time.
Very seldom that I shoot jpeg anymore.
The disadvantage are that it adds editing time and they take up much more space.