It seems most of the books on music theory I've read are all very dry and "scientific," which is only helpful to a certain point. One thing I've always wondered about is the reasons why people use certain chords or progressions to convey a mood. We all know the basic stuff like major conveys optimism and minor conveys moodiness, but what about beyond that? For example, if I'm writing something that is supposed to have an ethereal feel, I tend to choose a lot of major and minor 7th chords (and also use those for a jazzy feel a lot too).
What about you guys? What are some of the chord types you associate with certain moods, or how you approach chord progressions to convey something? What about using augmented, suspended, and other less popular chord types?