Well, there is my neighbor....He's kind of a one man windfarm, but maybe more of a windbag.
Personally I find them somewhat fascinating, although a ceiling fan holds my attention longer than it should.
I don't know if they have been around long enough to allow documentation any proven side effects. Early on, theories seem to abound on all these things: High KW power lines, the ELF system for navy sub communication, the list goes on. Eventually the hoopla seems to die down.
I suppose anything that produces low level energy fields could have some effect on humans and animals but we're bombarded by multiple forms of radiation and emitters every day so how do you know? Took a trail ride by the Prairie Island nuke power plant last week. Not sure what their waste storage situation is but didn't feel anything unusual. I did notice that my sled glows in the dark now.