Here's a breakdown of why:
* The Stone's Power: The Philosopher's Stone is a powerful magical object that can create the Elixir of Life, granting immortality. It also has the ability to turn any metal into gold.
* Voldemort's Desire: Voldemort is desperate to obtain the Stone because he wants to regain his physical body after being defeated by Harry's mother.
* The Threat: If Voldemort succeeds in obtaining the Stone, he will become invincible, leading to catastrophic consequences for the wizarding world.
* Harry's Role: Harry, along with his friends Ron and Hermione, must uncover Voldemort's plan and prevent him from getting the Stone. They face numerous challenges and dangers along the way, ultimately culminating in a final showdown at Hogwarts.
Therefore, the main goal in the book is to safeguard the Philosopher's Stone and protect the wizarding world from Voldemort's return to power.