There will be anarchy if no rules are followed. Some rules are natural. These we follow by instinct. If man were just a wild animal and not moved in society, he need not have followed any rules. The large human population has given rise to complex social and economic life that limits scope for individual choice to live as he likes. That is why it is said that man is born free but everywhere he is in chains.
life becomes miserable as we don't have a style to follow on .
No rule means you may follow your own rules. Nobody will compel you to follow anything you dislike. In a small gathering of free and broadminded persons, there may be fun of following no rules.