Why does a shell process terminate when you presses at the beginning of a new line?

What will be an ideal response?

The purpose of a shell process is to read standard input file (the keyboard by default) for commands and try to execute them. is the end-of-file character in LINUX/UNIX. When you press on a new line, shell thinks that it has reached the end-of-file of standard input. It, therefore, terminates itself as the file (standard input) it reads commands from has ended.