Partly, I agree - this is indeed a masterpiece and in my opinion (*ballade in G minor*) Chopin's first in his career of composing (at least among solo pieces). Some of Chopin's most beautiful themes reside within this ballade. The secondary theme is captivating beyond description and I really like the contrasts between the thematic sections and the more technical parts.
Over time, however, I've felt that the ending, particularly the last eight bars or so, lacks much of the epic quality so evident in the rest of the piece. I'm a bit disappointed Chopin didn't find a better way to end this masterpiece than the simplistic noisy keyboard runs with octaves and thirds he chosed.
Well, I think completely contrary!!
The ending is so damn good!! So much powerfull, and so uncommon..
I love begining(wich is one of my best beginings too) as much as ending...
I dont know why you dont like it, try to listen it like "music" not like "octaves and thirds"...