Hehe, I think it's best to just do away with darkworker and lightworker polarity labels, and just use love and fear. You can either do things out of love, or out of fear. That's all that really matters.
And the key distinction, is to notice that desire is actually motivated by fear, by implicit lack. Love on the other hand, is not motivated by anything but itself, and it sustains itself eternally, because Love is the Truth of Reality and who we really are.
That's all that really matters. The thing about STO (service to others) is that it is based on the higher truth that we are all One and we are Love, and so it is inherently more truthful and love-based. STS is based on the "truth" that we are separate individual human beings, and reinforces the idea of serving ourselves separate from serving our One Self, and so it is inherently weaker and more fear-based. But the underlying principle is really just fear vs. love, and if you get that, then nothing more needs to be said
