I don't agree at all that the true nature of psychopaths is chaos. That's a profound misconception.
The nature of psychopaths is that they lack empathy, which means they'll act without consideration for the feelings of other people, because they simply don't have that capacity.
Ironically, that makes psychopaths LESS chaotic. They tend to act out of a very deliberate and carefully arranged personality and motivation, because they're not as burdened by social inhibitions as most people are.
The downside is, obviously, that they have a hard time forming true connections with other people - and they tend to act in a very selfish way, simply because they're not feeling the impact of their actions like the rest of us do.
However, we all act a bit like psychopaths - because while we're capable of feeling empathy as "normal people" - we need to be in close contact with others or to be a witness to actually get that sensation. This means that we're fully capable of extremely selfish acts - just as long as we don't have to witness the results.
This is largely why so many people fully support the extremely uneven division of resources in the world, and the reason so many people are suffering - while others have a thousand times the resources that they need.
Not because they're evil - but because they're willfully ignorant - and they don't (truly) witness the consequences.
I absolutely agree that psychopaths lack empathy. Very accurate. But it's a bit more complicated than that.
They don't have a sense of self, or the self. They did not develop, let's say normally (whatever normality is), better to say they did not develop themselves in a healthy way. The reasons can be a few, but let's say the very lack of love and proper care towards them(often abused, mentally or psychically), makes them into what they latter become. Not all, everybody is different.
So, they chaotic life indeed makes them mentally and spiritually distable and distorted. They inner world is pure chaos, so the true nature for them is chaos. No misconception here.
They actually suffer a lot, they suffer indefinitely and they simply need to project that inner insanity to the outer world.
We are not all psychopaths, but we are all neurotic. Someone more, someone less, how ever one copes with reality.
Being WILLFULLY ignorant is TO BE EVIL. It is however different if someone is ignorant and doesn't know it, but that is actually called being nescient (nescience).
So actually we can say that ignorance is an act of evil.
And we are all selfish. Nothing wrong with that. If we weren't, we would probably die as a species a long time ago. The very act of that we breathe is selfish. Said Alan Watts.