Why does oganesson have no practical uses outside scientific research?

Oganesson has no practical applications outside of scientific research primarily because it is a highly radioactive synthetic element that does not occur in nature.12

The element is extremely difficult to produce, requiring specialized particle accelerators to synthesize only a few atoms at a time. Furthermore, these atoms are highly unstable, with the longest-lived known isotope, oganesson-294, possessing a half-life of less than a millisecond before decaying into other elements. Because it exists for such an incredibly brief duration and can only be created in minute quantities, it is impossible to accumulate enough of the material for any functional or industrial use.12