It's hard to explain, but it represents the psychological side of a profile. It's a vertical division. Like a step towards the dark side or to another quite different.
It's like if you leave the flames to enter in the dark, or otherwise. Right now, I feel something very similar. My soul needs to be fixed in this real world, but a part want to be in another world differently, illusory.
OK, It's personal. But I think it illustrates a painful change. If the world burns, because it will turn into ashes.
I hope I haven't seemed too crazy. Sometimes, I am. I just realized now that you changed your Avatar.