As I child I was not a fan of classical music. NOT a fan. I would scour the library or bookstores for popular piano music to avoid playing it in lessons. My teacher did let me play (and improvise) the popular songs while my classical scores limped along until contest.
When college auditions came, I panicked. All memorized classical music?! I was forced to “get serious” about practicing and nothing was more easily accessible than Beethoven.
Beethoven’s music sounded good AND fit well under my fingers. The more I played it, the more my musical language grew to appreciate early Bach and Haydn all the way to the late great weirdness of Bartok. But Beethoven was the road in. Hours of practice culminated in a long senior recital. It was one of my personal “conquering Mount Everest” moments.