No, there’s no inherent need for every variable to allow a nothing. There is a need for a nothing value in many cases and languages without an implicit null, s

No, there’s no inherent need for every variable to allow a nothing. There is a need for a nothing value in many cases and languages without an implicit null, such as Haskell, F# and Rust, employ an ‘option’ type. It’s a dedicated type that either contains a value or nothing. It forces you to declare when you expect a potential null and to check for it.