this is the look of someone who knows he had completed his purpose in life

He looked so peaceful and contented!!

Best picture they have selected.

You mean like:

And then,

Sure he had completed his purpose in life.

He had put all his worthy opponents away, driven them away and had no others to put away.

If you ask me, he looked BORED and wished he had more opponents to put away with the little time he had. LoL