I don't think I would want it, but I also don't think it should be destroyed. Art is art, and regardless of the quality of this work, it has historical significance.

For anyone who might be in favor of destroying Hitler's artwork, I'd ask, would you also be in favor of destroying anything written by Hitler? It's perhaps easier to grasp why his writings would be historically valuable, especially to increase understanding about the man, why he did what he did, what his plans were, and so forth. Actually, since writing is no less a creative outlet than art, I'd say Hitler's artwork might provide clues to his madness.