One reason I gravitated away from classical music and toward commercial music is...the parts. Here is the part I played in a symphony orchestra, I believe it's Prokofiev. In the two movements on that page I got to play 7 notes, total.

And here is the trombone part in a big band. After playing 7 notes in that piece I'm not even out of the first measure.

I learned trombone in order to play music, not to be a professional rest counter.
Also, classical players seemed much judgier and musically more narrow-minded than commercial players. I did not like that the professionals in a pops orchestra I played in sneered derisively and looked down their noses with disdain at the music we were being paid well to play, and which also packed the Hollywood Bowl with audiences who loved it. That really turned me off. And I actually enjoyed the pops music. Also, the whole fiasco with Johnny Williams and the Boston Pops turned me off.
How about you? What's your musical preference? How did you fall into that? And why did you decide that's what you liked doing more than any other kind of music?