why WoW??

World of warcraft,why this game hypnotized us?why when we first create the main character,we want him bigger and bigger?....stronger and stronger?....and so we play and play.There are alot of other Rpg games,tons of them,even better graphics Rpg,Why World of Warcraft(Wow)?i myself,i am a Wow player,i have played on both server tipes(private and Blizzard),it's no discuss Blizzard's best,but on private server you gain skill,you gain knowledge.I have played as a Gm(game master),i had my own private server,it was a cheap one but important is that i watched Wow in every view it has.Some people will say : "World of warcraft,so what,you reach 70(with Burning Crusade),make full profession skill,make  full gear,you Pvp and then you get bored" ,well it's not like that,its easy to say but very hard to do those things,and you will never reach the maximum capacity of the character,it will always be something you don't have,you  didn't know it exist,because the game changes,Blizzard takes care you don't get bored,and if you get bored,it's simple,you just update next patch,or begin another character.