There are many jobs where people program in machine code. Many microprocessors are used in industry. I know a man who is a supervisor for a medical equipment company. He loves for people to study assembly. It is necessary to program some of his equipment in machine code.
Assembly is too difficult.
I have no idea where the notion that assembly language is more difficult than other languages came from. It is not so. The only problem is that writers have no ability to explain things so that they can be understood. Once you get through the poorly written texts it is all quite simple. This is the first piece of software that I wrote.