Two friends, Alice and Bob, are discussing their favorite types of music. Alice argues that classical music is superior to all other genres because it has stood the test of time and has complex structures that pop music lacks. Bob counters that while he appreciates classical music, he believes pop music is more relatable to the average person and can, in fact, be more emotionally impactful. They both agree that music appreciation is subjective, but they disagree on the value of classical versus pop music.

Based on their discussion, what is the main point on which Alice and Bob disagree?