Geographic constraints that isolate each region also led Sundanese villages to enjoy their simple way of life and their independence even more. That was probably the factor that would contribute to the carefree nature, egalitarian, conservative, independent and somewhat individualistic social outlook of Sundanese people. The Sundanese seem to love and revere their nature in spiritual ways, leading to them adopting some taboos in order to conserve nature and maintain the ecosystem. The conservative tendency and their somewhat opposition to foreign influences are demonstrated in extreme isolationist measures adopted keenly by Kanekes or Baduy people. They have rules against interacting with outsiders and adopting foreign ideas, technology, and ways of life. They have also set some taboos, such as not cutting trees nor harming forest creatures, in order to conserve their natural ecosystem.