I can speak as a person who once did listen to Morrissey exclusively. My tastes have expanded somewhat since I was seventeen, but back then I listened only to Morrissey, several hours a day, every single day.
When I first discovered Morrissey I wasn't a music fan at all. In fact, often I drove in my car with no radio on or anything; just silence. Morrissey changed that forever, really. The reason was simply that Morrissey actually spoke to me; his music was the first thing that ever spoke to me. That unlocked a level of emotion that I was never capable of. I had never looked up to anybody in my life; nobody had ever really given much though about my life, not even me. And then Morrissey comes along as if he's been there every second, writing down every detail, and even if he didn't actually care, he at least understood. In addition, he taught me that it was fine to be strange. I wish I could pinpoint a particular song that invoked all of this; but it was no song in particular. My first album was "Hatful of Hallow," which was quickly followed by "The Queen is Dead" and "Louder Than Bombs." That was followed by a few months of constant discovery of new material; albums, b-sides, and live performances, which was quickly followed up by "You Are the Quarry." Those were some of the best times.
Since those long passed days I've become quite a big fan of The Cure. Other bands I rate highly include Sia, Third Eye Blind, Boston, and Suede. However, the only one who gets a daily listen is Moz. The rest come and go with the seasons.
-Lucas