What Need For a Fence That Is On The Verge Of Decay

Literal Meaning:

There is no point in keeping up a fence if it is worn down- unable to do its job

Figurative Meaning:

At times there is no need for unnecessary doubt when it is incapable of preventing the inevitable

- Dmitri Milan Mikhailov

Individual A: "I find myself completely distraught, whatever am I supposed to do dear compadre?"
Individual B: "Fret not my dear, for what Need for a Fence that is on the verge of decay?"