Yes, I'm an addict. Whenever there isn't music playing (even if it's something I don't like), the silence makes me nervous. I strive for the best possible listening experience all the time. Also, I study music. I play both piano and guitar, and know tons of musical theory, and I know singing theory (although I can't sing).
I'm also a bit of a music snob, if you will. I can't stand bands that play exclusively in 4/4, use only fifth chords on the guitar, never vary the tempo, use only major scales and tonalities, etc. Stuff most people would never even notice bothers me. Pop music hurts me inside, while Classical or Progressive transports me to a dream-like state in which music is given the proper honour it deserves as an art form.