Let's face it: Cornelius Fudge is first and foremost a politician, and a politician he is through and through. His primary concerns are the viability of his post and his popularity, and when faced with the inconvenient truth of Voldemort's return, Fudge chooses to deny the danger to the wizarding world. Because he is a coward. Instead, he puts effort in to discredit those who, in his opinion, threaten his political power, and ultimately shows himself to be paranoid, self-centered and without scruples. He also appears to be somewhat gullible, being easily duped by Lucius Malfoy and apparently failing to recognise Umbridge for what she was. He's also just quite a pathetic character, showing few traces of bravery and inevitably doing little for the greater good of the wizarding world.
I love Stephen King and music festivals; I eat my toast upside down; I daydream about getting married probably a bit too much; and I wish every day for a pet sausage dog puppy (who never materialises – sob).