If you are doing something else, then you can't truly enjoy music as it's supposed to be enjoyed. Sometimes just attention isn't enough and you have to read an analysis or listen repeatedly. Music takes as much concentration and focus as proving a math theory or solving a hard differential equation problem, it is a mental exercise, and if you do not like that, you do not genuinely like music. Or you like it as much as pop listeners like their pop slop, a.k.a. you are a cattle.