@Setanta,
Female roles aren't the big problem. The problems are:
The male dramatic roles all sound like somebody experiencing diarrhea and a colonoscopy at the same time.
The themes of the operas are generally just stupid intrigues (the themes of German and Russian operas are generally loftier).
The language itself just basically sounds ugly.
The good news is that as TV and the internet continue to shrink the world, the Italian language will probably go away. The two Romance languages which will survive will be French and Spanish.