Number of players =\= better game. Numbers only matter to a certain type of person. Enjoyment makes a better game. While yes, I will admit that at a point the number of players will affect enjoyment. But in the case of WoW, the playerbase is so excessively spread out that it feels like there is hardly anyone playing (especially on many realms). And this population disparity keeps feeding itself when people would rather play on high population servers. This was very apparent about a year ago when there were many threads here saying "Which shard has the highest population?" so they could continue to increase a single server's population while the others continueto feel empty because everyone was converging on a single realm (Wolfsbane US and Icewatch EU).