playBunny: Like putting the final piece in a jigsaw before breaking it up and putting it in the box, it's logically unnecessary but it has a tangible psychological value.

Poor example....

A puzzle is not completed or finished until the last piece is in place, but a backgammon game is completed or finished as soon as someone wins it, not when the last checker is removed.

not Indulging someone to derive pleasure from a meaningless activity is not rude.

Winning is the ultimate objective to any game. Most games are finished when the outcome is decided.

Anyone who is interested in getting pleasure from removing checkers in a meaningless game can play games that do not count and are not rated, otherwise it should be assumed that one is playing to get pleasure from winning.