As according to the Hitchhiker's guide to the galaxy, after God created the world and all life, his last words to humanity were, "Sorry for the inconvenience." As thus, he decided to create a meaning to live, the pursuit to find the meaning of life. However, to make the hunt last longer, he made the answer so blatantly complicated and yet so pointless that nobody would even think that this is the meaning to life.
After hundreds of millenia, a computer was built by a group of aliens to find what exactly the meaning to life was. However, the computer could not crack it even a little. It then decided to spend another century to build a giant supercomputer, one complex enough to find the meaning of life. After another century, the supercomputer is built. It determines that the meaning of life is not a cause, a reason, an action or person, it is actually the number:
42
