YOU SAID:

I don't get the point of this fruitless endeavor

INTO JAPANESE

私はこの実りのない努力の要点を理解していません

BACK INTO ENGLISH

I don't understand the gist of this fruitless effort

INTO JAPANESE

この無駄な努力の要点がわかりません

BACK INTO ENGLISH

I don't understand the point of this wasted effort

INTO JAPANESE

この無駄な努力のポイントがわかりません

BACK INTO ENGLISH

I don't know the point of this wasted effort

INTO JAPANESE

この無駄な努力のポイントはわかりません

BACK INTO ENGLISH

I don't know the point of this wasted effort