Got a draw with a king and knight verses a king and rook

In this game I successfully got a draw in an end game, in which I had a king and knight and my opponent had a king and rook.

It was a drawn position all the time. A rook can only win against a knight if he can separate the knight from its king.

R vs N is really cheap, dead-drawn in more than one way. „Normal“ positions with N beside K provided, no claustrophobic positions.

Its a drawn position

what so amazing about that?