I'm a fan of breakfast buffets, but most standard American breakfast food is hard to screw up. Especially when they have an omelet station, but that's not even necessary. That's not to say there isn't some really great, more elaborate breakfast food you can't get on a buffet (or at least shouldn't), but they work pretty well as a way to kick off the day with a nice variety. In Disney terms, I'd certainly rather spend the $30 or whatever it is to have the breakfast buffet at Boma than spend the same $30 for a breakfast somewhere like Be Our Guest.
I don't typically eat enough to really justify the price, but I like being able to have a very small amount of a large variety of things at breakfast.
I'm completely with you on lunch or dinner buffets, though.