Using volumetric cup measures is extremely inaccurate for compressible foods like flour. With a scale, you get more consistent results.
A scale will also save you clean up! Rather than using different cups to measure out every ingredient, just place a bowl on your scale, and measure directly into the work bowl as you go. For instance, when making a pizza dough, I know I can add 1 kilogram of flour, 700 grams of water, 25 grams of salt, and 10 grams of yeast and have a dough that will behave exactly as I expect it to, all with only a single bowl to clean.
