I think I've worked out why.
To me, music is all about discovering an artist you like and following them and their career, letting yourself be pleasantly surprised by their progress; indeed, even hearing them develop through their music - hearing them express different emotions through their songs, taking you on an emotional journey. It's why I really only enjoy whole albums, and then only ones that allow me to experience what they are experiencing.
This rather limits my musical tastes I feel; I don't like manufactured.. well.. I stop short of even calling it 'music'.. I find it harder to associate with music that sounds 'samey'; Iron Maiden being a case in point. You play any Iron Maiden album and you know what to expect. Try the same with Black Sabbath, Led Zeppelin or Tori Amos for example and you'll get completely different and compelling music.
However, that's not enough. Artists like Madonna failed to captivate me because perhaps it's too.. manipulated. Or perhaps I just didn't like the music. But artists like Kylie Minogue or Britney Spears have changed slowly and significantly over the years and are worth exploring, in my opinion.
So, my question is, how do you appreciate music in the context of what I've said here? I'd be very interested to know, oh, and plus, your favourite bands/artists and why..