Retirement: move to a tropical country, build surfer shacks close to the beach and rent them out to tourists through Airbnb. An open-air bar would be a good idea too, selling coffee, cigarettes, beer etc. The country should be tropical, yet close to developed countries (for more tourism). The nice thing about living in a tropical climate is that you don't really need a proper shelter, just something simple to keep you dry in case it rains. Plus you can supplement your diet through fishing.