Humans are not rational animals. Oh, sure, we pay a lot of lip service to logic and reason, but we're suckers for ceremony and symbolism. Ultimately, it's about all about feelings.
Every time gas jumps ten cents, somebody trades in their perfectly functional Accord and goes thirty long into hock on a Prius that, even were gas to double in cost, would not have a prayer of paying for itself in fuel savings before it, too, gets traded in.
People browse the organic breakfast food shelves for the muesli that tastes most like authentic sawmill floor sweepings, because that's how you know it's good for you. It's not food, it's a hair shirt you eat. When you're doing penance for not going jogging this morning or for having that extra martini last night, it's not supposed to taste good.
Likewise, wind turbines are not meant to actually be an efficient way to supply the power grid, rather they're prayer wheels for New Age iBuddhists, their whirring blades drawing white guilt from the atmosphere and pumping it safely underground. This is why they put them out in farm fields in the country and not, say, off Martha's Vinyard or out on the back nine, in view of the clubhouse: What good is a shrine if you don't have to make a pilgrimage to get to it?