Perhaps that’s because it’s what you know best and are used to. Volumetric measurements of anything that doesn’t have a fixed density make no sense to me. What the hell is one cup of broccoli? Even a cup of flour can have wildly different ammounts of flour. My least favorite though is butter, how the hell am I supposed to measure out 3 tablespoons of butter? Melt it all on the stove and pour out what I need? I find it incredibly unintuitive.