Auditions are an unnatural process of choosing talent.
Most actors hate to audition. They never know what to expect and often, their reading is not as good as it was when they worked on it at home. When you're relatively new to the business, you want to leave a favorable impression so the casting director remembers you fondly. But no matter who you are, what you've done or who you know, in most cases, you will have to audition for the role. Actors who are always working are the ones who are always auditioning.