Whether it be by a childish teenager prank calling you, an immature ex or a telemarketer, it's annoying when you receive calls from someone who never leaves a message and you don't know whose number the call came from.
Apple has a history of knowing what people want and producing it, even though Apple's products also have the name of being a little expensive, but that is neither here nor there. If someone wants something badly enough, price frequently does not come into it.
Ten or fifteen years ago, a cell phone looked like a thick walkie-talkie with an antenna as thick as your little finger. You'd see them on the ears of glamorous actors pacing down the streets of New York, in movies depicting corporate big city life.