I usually only shower ever day or two unless I am sweaty, dirty, or smell bad. This seems very sensible to me.
Several days ago, under criticism by Mika, I defended this behavior by arguing that the fall of the Roman Empire was brought on by the fact that Romans took too many baths. Now many people argue that Roman decadence, of which Roman baths are a major example, was a leading cause of the fall but I used the term "bath" quite literally.
I argued that the Romans were overzealous bathers and we’d be wise to learn from them if I intend to avoid their fate.
The truth aside, I thought this was an excellent argument.