Why Should I BLog?

Here is someone trying to assign some reasons , methods and some sanity to the blogging world and spirit.

Are those the reasons why I blog?
Are those methods used by me? OR should I use them at all?
Should there be any methods or rules at all?

The social media is itself becoming so complicted that it is now almost as diverse as the human nature itself and i guess assigning rules may be like stifling the diversity.

The diversity shall define the boundary and rules.