With better sounding equipment, I've noticed a vast expansion of my musical tastes. While I still prefer classic rock and electric blues, I thoroughly enjoy some country, much classical, and much jazz. Music that would have driven me from the room a few years ago, I now sit and enjoy.
With better speakers, detailing, soundstage, I enjoy a much wider variety of music. Either that, or I'm a going deaf old f@rt, and I want to hear while I can.