Why Hamlet took to long to kill Claudius

Why Hamlet took to long to kill Claudius?
Shakespeare's drama Hamlet has become a central piece of literature of Western culture. It is the story of a prince named Hamlet, who lost his father. Soon after that he has to confront multiple obstacles and devises a series of situations to defend the new king's royalty. Furthermore, he had to prove that King Claudius, who was the prince's uncle, had killed Hamlet's father. This story has remained among the most popular and the most controversial plays around the world. It generates controversy for all the doubts that this play leaves with the readers. One of the most questioning situations in the play is the delay of Hamlet in avenging Claudius' for his father's death. As a reader this situation captures me also, so after analyzing the story I found that Hamlet has various reasons for delaying taking action. Hamlet's moral dilemma, his constant need to either prove or disprove what the ghost tells him, and his concern about Claudius' afterlife.