junioX

Sonic, truly, is not a character, but a metaphor, for all that is good. Sonic is a being that does whatever he wants. He doesn't have morals, he doesn't do things because it's socially considered to be "good". He just does whatever he wants, and it just so happens that what he wants to do IS good. He does not help people or save the day because it's ethical. He does whatever he wants and what he wanted to do was help people. Sonic isn't a hero and he doesn't consider himself one because he just does whatever he wants. Sonic IS good itself. Sonic brings positive change to everyone around him.

Sonic is "Just a guy who loves adventure!" Sonic's true best friend isn't Tails. Yes, he cares about his friends, but he loves his adventures more. And his favorite things are just running around, exploring the world. Involving evil or not, his favorite things are the adventures that he goes on, and he can't have his adventures if he doesn't have the ground under his feet to run on. His true best friend is The Earth.

Sonic is the symbol of good and life while Eggman is the symbol of humanity. Eggman could never change because he is the symbol of humanity, and as long as humanity continues to exist, it will continue to do evil. Eggman IS evil. The reason why Sonic does not kill eggman is because he is not a hero. In that case, killing eggman would be the most heroic thing to do, because by killing eggman, you would save countless lives. But Sonic doesn't do that because he lives for the adventures that Eggman creates. But he knows that in the end, everything will be alright and that he will come out victorious against eggman forever. As long as sonic continues to live and run, he will continue to defeat eggman and do good. And as long as Eggman continues to live he will continue to try and defeat Sonic and do evil. Eggman is the paragon of evil, while Sonic is the paragon of Good. These two co-exist with perfect balance.