If you read the Toronto Star recently, you might think that wind power's only problem is unreasonable health concerns, and a minor case of NIMBY.
I'm still undecided about the health effects of wind power, to be honest. I can't see any reason why they might cause health problems, but I'm not willing to dismiss the idea out of hand without any widespread implementation and observation. I'm pretty sure though that in 20 years or so we'll have enough samples for some researchers to make a study examining health and proximity to large commercial wind farms.
But that is not wind power's main problems. The problems facing wind power are dual; its too expensive and too intermittent. Problems that have been largely papered over by the wind power lobby and have not been brought to the public's attention.
Other nations and jurisdictions, such as Scotland and Spain, are finding out the hard way that wind power is no alternative to coal or natural gas. Both in terms of electricity generated and in terms of cost per unit output.