conventional undestanding is basically the opposite of what you said
dark entities feed off the fear of others, not the love. Their heart chakra is deactivated because they dont have an outward expression of love. Their love is totally inward. If you have an activated heart chakra you can't help but feel universal love.
The way to repel a darkworker is to send love at him. For instance Erin wrote a blog post about "Fighting Supreme Evil" that fits in with conventional beliefs on the topic and my own experience.
Erin Pavlina’s Blog » Blog Archive » Fighting Supreme Evil
The idea that you fight evil with a sword is mistaken, you fight it by projecting love towards it. That is the way of the positive polarity.
Dark beings can't and don't accept the love. They don't feed off it - it repels them. The brighter the expression of love, the more the dark being is attracted to the positive polarity and the more the dark being is likewise repelled due to his preconceived intentions.
As far as being evil, remember that people choose what to do. It's totally an individual choice to be either one - so I wouldn't be suprised that while you start intending to follow the negative polarity you start feeling this allergy to love.
The dark incite fear in others and through that fear control people. This is basically the explanation behind demonic happenings, nightmares, and all the various horrors people experience at night and on the astral planes. Generally speaking they are visits from dark entities trying to find people to enslave through fear. By giving in to the fear one makes himself a target.
The negative polarity relates to everyone with power structures - so a powerful negative entity relates to a weaker negative entity by enslaving him for his own benefit. The weaker negative entity will often be OK with this because the powerful one teaches him in return. It's a mutually agreeable relationship, but one is always the master and one the slave.
Conversely, on the positive polarity, entities basically don't believe in power structures and refuse to participate in them. This has always been part of my positive bias - I just have never been able to bring myself to participate in hierarchical power structures in any way - as either master or servant. There is something in me that finds the notion repulsive.
Positive polarity instead is based entirely on the privilege and joy to serve, the honor and duty to serve. And this includes serving and loving the negative polarity, as they are an irreplaceable part of the one infinite creation. However, good only serves evil on it's own terms and in it's own way. That is the nature of proper service. There is no concept of loyalty, for instance. Just love, honesty and generosity. Good doesn't do what it is told it does what is in it's nature, in the nature that it has cultivated.
This is both the explanation Ra gives and the experience i've had in my own life. When someone asks me a question about material that I think is highly beneficial I feel compelled to do my best to explain it to them so that they might find it useful. But I only serve in my own way on my own terms - I can't serve someone by lying or deceit or by being "loyal" while they do something negative. That kind of behaviour has just never been ok with me, due to what I basically decided was an "innate" positive polarity bias. Of course I could still will myself to be negative if I wanted to, and I've gone down that path before as well unintentionally due to fear. I think Star Wars was right when they said, "Fear is the path to the dark side." If you don't conquer your fears, especially fear of others, you end up moving towards separation consciousness. This doesn't mean the dark side is based on fear, it just means fear is the method of control and can also cause someone to start walking the path. But you won't get far down that path if you dont find a love for yourself - if you're paralyzed in fear you'll just become a tool of some powerful negative entity.
Anyway while a negative entity will demand things like loyalty from his "friends," a positive entity demands nothing and seeks only to give. It has never been very hard for me to differentiate between the two in my own mind. I could be totally wrong, like you say, but I doubt it
And either way, I'm not going to change my direction, because I have too much experience showing me that this is the direction I want (whatever it may be called).
Unity doesn't scare me it enthuses me. Slavery, to me, is the loss of that unity.