I recently finished the concept development for a space that had an excessive amount of moulding. We're talking amounts of Titanic proportions. While it was unbelievably mind-consuming to figure out the geometry, the virgo in me was actually absolutely in love with the whole process. There's nothing like (well to me at least) the satisfaction you get when your layouts equal out evenly and create proportions in a space that might otherwise feel blank or stale without.
I've actually been considering adding moulding to our walls at home, because well, why not?