OT minor rant.....

OK - why is usability pronounced yoos-a-bility, when, following the rules of pronunciation, it should be pronounced us-ability, because there is no 'e' to make the 'u' have a long-yoo sound? Use and us are not pronounced the same, so why should usability and useability be pronounced the same? (Grading WAY too many tech plans that say usability and refraining from correcting them because, according to Word and most dictionaries, both are acceptable.) AARRGGHHH!