why is the main character writing this story

Prendick

The narrator and protagonist, Edward Prendick is a member of the upper class. As a refined and educated man (he, like Moreau, has studied biology, although only on a whim), he feels quite out of place on Moreau's island. His reactions to the Beast Men are especially significant, and as his ability to distinguish between them and their intended model of humanity waxes and wanes, Wells forces the reader to question the distinction between men and animals. His initial friendship with Montgomery, which later devolves into something closer to pity, is also reflective of Wells's central theme. He serves as the extension of the reader into the text--we experience the events and characters solely through his eyes and actions.

The protagonist is relating his experience on the island.