Would be good to not depend on the US that much any longer, since they have proven to be such an unreliable "partner". Even in a non-Trump future one cannot rely upon some future election not resulting in some similar disaster. Better to pull out, before some hothead gets weird ideas about that gold.
Maybe the fact that US soldiers and military bases exist inside Germany's borders is slightly more important than where the gold is. First regain your sovereignty, I'd say.