"I am."

The story goes that early in the 20th century, The Times of London sent out a query to famous writers, asking, “What’s wrong with the world today?” The great Christian apologist G. K. Chesterton replied, “Dear Sir, I am. Yours, G. K. Chesterton.” 

Read more: Whom Should We Blame for the Violence? | Christianity Today

Blaming others is the direct result of sin. Genesis 3:12-13, 'The man said, "The woman whom you gave to be with me, she gave me fruit of the tree, and I ate." Then the LORD God said to the woman, "What is this that you have done?" The woman said, "The serpent deceived me, and I ate."'