Purple: I agree, it's not fair from him to reject a game with you, but I think we must not impose an opponent on someone : he must be free to play with you or not.
Nobody is dupe ; we often see, here, people who aren't fair (example : people who send an invitation to someone else just for raising their BKR).
Me, I look at my rating, just to see the games where I have to progress, and just to have an idea, but I don't want to be prisoner of this rating, I don't forget that, 1st, I'm here for fun.