This is just something random that's been on my mind for a while. People who play certain classes, seem to often have a certain style in addons. While this of course isn't always the case, I've noticed a few similarities. Maybe it lies in the personality of who plays these classes?
Shamans: Spend a lot of time on customizing their UI. Very advanced, graphically interesting, and minimalistic.
Warlocks: Seem to be unable to use simple addons. Often have a heavy compilation such as LUI, or have many elaborate warlock-specific addons. Don't seem to be very active in the UI customizing community.
Hunters: Usually have a minimalistic style. Try all sorts of things to make the pet interface "blend in" with the rest of their UI.
Of course, these are generalizations and probably often false. But has anyone noticed anything similar?