Kevin,

When a player starts taking very long between turns of a game that is at a critical juncture, it can be VERY annoying. In chess, for example, most moves are not individual moves, but part of a sequence of moves. If you have to try and remember what you were planning a week or two ago, it takes all the fun out of game playing, at least for me. Multiply that by a few games and the slow play starts to suck all the fun out of BrainKing.