Why is a password generator important?
A random password generator is much more effective than creating a password made up by a person. Reality has shown that people are not very good at coming up with random combinations, whereas a computer can devise countless random combinations within the blink of an eye.
From a security perspective, it's also true that passwords created by people are far easier to hack than computer-generated passwords.
If you realize that when someone is trying to break into a computer system, the most commonly used password systems use lists, such as names or cities. This is a lot easier to guess that a generated password, which is completely random and therefore has an endless number of variations that are almost impossible to guess.