Oddly enough, I didn't like L. E. Modesitt Jr's books... neither the Order/Chaos ones nor the Soprano Sorceress ones, and the main reason why I didn't, was because I actually disliked the worldbuilding in them. I disliked the Soprano Sorceress because we get a world in which the beauty of music has been replaced by doggerel, and that's too bleak a concept for me to enjoy. And I didn't like the Order/Chaos world because I didn't like its metaphysics; I don't believe Order and Chaos are like that.

I also suspect that I'm enough of a "character junkie" that interesting worldbuilding isn't enough; there must be likeable characters populating said world. I mean, for example, Greg Egan's "Permutation City" was what I call an "idea" book -- it had some really cool ideas in it. But I couldn't care less about the characters, so it's a worth-reading-once sort of book, for me.