Cause and effect is the way of the universe. Everything must start somewhere. In the case of the System, this is where it was born. You will fall right into its cradle.
Together, the sanctuaries and the Obelisks that power them are the ancestor of every island that floats in the sky. They can all can trace their origins back to this single prototype. Though it is flightless, the core principles and technology behind it are the same.
In a way, that makes it your ancestor too. You were all born within the System, after all. Even if your design is somewhat altered, in a way, you're all its children.
One could say that when you fall, it will be something of a homecoming. In more ways than one.