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I think we all accept that WoW has polarised gamers, because they want to make the game more accessible and therefore the hardcore WoW gamer is being driven away in favour of people who have families/jobs/school and can't spend weeks online just to down a raid boss.
People's lives are getting busier and busier with more serious stuff going on - people working harder to earn the same money to pay higher bills etc.
It makes sense for Blizzard to go where the demand now lies.
What I don't get though is people starting and joining endless for/against WoW threads. If someone loves/hates the game, you really are not going to convince them to take the opposite viewpoint, no matter how well you argue it - their decision is made, so let them get on with it.