What is the purpose of rules in photography?

The purpose of rules in photography in my opinion is to created interesting and quality photos.

 

What are (some of) the most important rules in photography?

 

The photo should be on focus:

the main subject should stand out by using techniques. (for example, placing main subject in the middle, brightest colour in the middle)

 

Balance:

The photo should be somehow balance, the use of line and shape is very important.

 

Fill the frame:

The photo should not include other object at the photographer do not wish to include.

 

Lines:

Leading lines

 

Center dominant eye