The beauty of the island helps maintain the tourism industry, which many people living here rely on for their livelihood. In terms of the famous haenyeo divers, the coastal environment and ocean rich with life helped them to develop their tradition and means of feeding their families.
People pay a little bit more for things on the island because most things have to be shipped to here. Additionally, if you want to go to the mainland for an event like a concert or to travel, you must fly or take a long train and ferry trip. Living on any island can be limiting in this way.
Living on a volcanic island can also be dangerous in terms of volcanic activity, but thankfully Hallasan has not erupted for more than 5,000 years.
In order to keep its environment protected, Jeju Island actually has an initiative to be carbon-free by 2030, promising to use wind and solar energy and hydropower instead of carbon-based fuels like coal, oil and natural gas. People here use public transportation or bicycle a lot, and many who drive have electric cars.