Learning how scales are built and what notes are in them helps you to create beautiful and inventive melodic lines. It also enables you to Learn how to land on notes that match the chords played by the rhythm section. To me this makes it more interesting always knowing where you are in conjunction with the band. Your solo lines will develop a lot faster, your ideas and sound will blossom, and your ears will hear colors like your eyes see colors in paintings. Works great for all styles of music.