Good Lord, this is so true. My friend was telling me a while back about how I'm a good judge of people and she wishes she could figure people out so easily, and I was like... girl, no. Sometimes, a person's energy feels so awful and the thoughts that come with it are horrible, and like you said, extremely dark. And figuring out where they're coming from can be difficult. Yeah, it gives a bit of a headstart when it comes to avoiding nasty people, but it makes you feel insane. There's no real way to talk about it, either, unless you're with another empath/psychic type person.