'Profitable' in the Bible

Lo, to the fire it hath been given for fuel, Its two ends hath the fire eaten, And its midst hath been scorched! Is it profitable for work?

Notice this, even when it was complete, it was not useful and was not made into anything. How much less, after the fire has burned [part of] it and [the remainder of] it is charred, can it still be made into anything?