This was a poem I came up with when I read the comics just after Robotniks defeat. My feelings about Sonics state of mind are expressed here. I'll let you read it and get your own opinion and I'll meet up with you at the end.
A Second Wind
Feelings For A Friend
By: Dante 40K
The parties are done with.
The parade is gone.
The time is upon us
To be moving on.
Its time to rebuild
Its time to prepare
A life without evil
That's always been there.
I'm sad to say I miss it
The adventures I've had.
This feeling of uselessness
Is dragging me down
Without a purpose
I just sit and wait
While my friends are all busy
Fixing this broken state.
No!
No I'm not useless
No I'm not done
I've still got a job
And the day's just begun.
The evils not gone
Not all anyway
I've still got a quest
And I'll do it my way.
It's time for me to leave
Its time for my world tour
I love you all dearly
But for now I say goodbye.
And now my thoughts: I think Sonic cant sit still for two seconds. Even though he knows life is better for everyone nowthat Robotniks gone he desperately wishes the action wouldn't stop. He lives for it. So he decides to leave Knothole, a place that has been liberated in serch of more bad guys to stomp on.