Prolog is awesome as a library, embedded in another "normal" language.

Prolog as a culture is amazing; the depth of it, specially when it's submerged in other disciplines, like constraint logic programming.

But, standalone, as a language, by itself: it either forces your problem into a text-book toy exercise, or drives you to frustration. It does all the difficult stuff out of the box, but you will need to cut through it with a machete to accomplish the mundane.