After Dominus Ghaul steals the Light from the Guardians, the Traveler chooses you to show how to regain your lost power. While it’s not a surprise that your created character would be considered special in the game’s universe, it’s not an exaggeration to say the solar system would’ve fallen without you. Although Destiny 2’s first-person shooter mechanics are virtually the same at a fundamental level, the gameplay strategies are unique between Hunters, Titans, and Warlocks. Choosing between the three classes remains one of the most difficult decisions to make, seeing that each presents its own pros and cons.
It’s only natural (and maybe a bit egotistical) that your created Guardian ranks as the best character in Destiny 2.