Aside from being able to use Singapore currency in Brunei, what does the country really offer beyond jungle, a royal palace, and small town settlements?
These are kind of things people purposely go for when travelling in other countries
Not everyone likes to visit big overcrowded cities, where the only thing to do is eat and shop
For the same reason why people want to go to less populated areas, and do nature related activities like hiking.
Substitute jungle with mountain, farmlands, fields, deserts, basically you would have described many places around the world. E.g. UK, France, Japan, Mongolia, Bhutan, Taiwan