I don't buy. I don't buy. I never bought such a machine.
You say "I want that one. That's conveninent and absolutely necessary. If you won't buy me, I would buy that one. May I buy that one? Oh, please!"
You say "Now the whole world is run by machines." What are you saying? No kidding! My family doesn't have such a machine, and your family doesn't, either.
This is a certain fact that it is great convenience. Moreover it is up-to-date! Do you know how much it is? I'm sure it's quality is granted. It's too expensive!