I always found it more fun to play ping pong and basketball without keeping score...reason being: it's more fun, it's more relaxing, and the playmaking is far more creative, because you try out more risky stuff to see what may happen, and you don't worry about losing a point when you do it. The "winning" obsession, as far as I'm concerned, is the classic means of ruining a sport or pastime when it's taken too far...and it frequently is.