[Homeslice]

All that should be necessary in court is: Stand straight, maintain eye contact, call them Sir or Ma'am, treat them with respect, and don't use any casual slang.

Not sure why "your honor" or rising when they enter the room is necessary.

My guess is it's done to make sure that "lowest common denominator" peeps are forced to wake up and realize that a courtroom is an important place that demands their full attention and clarity. But anyone who is halfway intelligent and raised well doesn't need such hand-holding. They can already do what I described in my first paragraph without being told to.