Nobody has ever observed, studied, interacted with, or examined a quark before. So how do we know they actually exist? 100% of quark theory is hypothetical. We have studied protons and neutrons and mesons and baryons but not quarks. There has never been confirmation that quarks exist, it is only a theory about the quanta that composes baryons and mesons. Nobody has ever observed a single quark by itself before and there are even theories invented just to suggest that we are unable to view quarks by themselves. So how do we really know what they are if they are impossible for us to study? Maybe they are outside of our range of study, they are beyond our limits.

Oh and what caused baryogenesis? How do you explain that one.