the electron really is the fundamental particle The curious thing is it has an electric charge of -1. But quarks, constituents of protons and neutrons, have +2

the electron really is the fundamental particle The curious thing is it has an electric charge of -1. But quarks, constituents of protons and neutrons, have +2/3 and -1/3 charge. So how is it that internally a proton has fractional charges but there's nothing analogous for the electron? How is it that there's such weird asymmetry there? Why have we only observed -1, +2/3, and -1/3 for electric charge? Somehow that just doesn't seem "fundamental" to me as a lay person.