It's a bit odd to be attempting to inform yourself of pros and cons you don't know, but also make a very strong opening statement about wind power. I work in the energy industry and I can honestly say I've never heard someone refer to wind turbines as "effectively unsustainable." Maybe, as a joke? But certainly not in any serious way.
If you want to learn more about wind in general you can cherry pick sections from the recently released Wind Vision[1]. It should be able to answer most anything you'd wonder about.