Cognitive dissonance is the emotion disruption caused by internal inconsistencies, not necessarily the inconsistencies themselves. Making peace with them is important for our own sanity. If you don’t have any strong emotions, I would probably say there’s no cognitive dissonance. I’m not a vegan either.
Learn an instrument! An hour of noodling a day will get you to pretty good quite quickly. An hour of real, hard practice, doing etudes, drills, and scales will make you a virtuoso one day.