People. People who don't like people.

Malthus, Ehrlich, Gore And Other Population Control Mystics | LifeNews.com: "They long for a pristine world where everyone has a few hundred acres of land, replete with all kinds of cute, cuddly animals, and they and their friends can have their solitude, while still enjoying the benefits of an advanced industrial civilization, including central air-conditioning, plasma TVs and cappuccino-makers."