Desire, Ego, and [all things “negative”] are often vilified as mortal enemies. But from a macroscopic view, they’re natural phenomena arising from our limited states of being.
If left unchecked, they can certainly inflict harm, but I believe that everything have its place. Not only that, I believe everything has its USE, depending on whether awareness has been honed, and capability has been sharpened.
So in my opinion, a sharp mind and a mature spirit can assess the “negative” for its uses or detriments according to context. This strips away the dogmatic idea of inherent worth, and propagates the symphonic state of functional harmony.