It’s sold as a convenience, but the reality is they’re having the customer do the job, but without pay. If I wanted to be a cashier I wouldn’t have gone to school. Of course this gets some traction with people who’s major goal in life is to minimize human-human contact, but for the rest of us this is a pain in the ass. On the other hand, this will still be the least objectionable part of the McDonald’s experience, with the food being second worst, and the supersonic diarrhea being worst.