I'll have a go at all these questions about light and energy, let's see:
"Finite perpetual"? What is that even supposed to mean?
The sun remains a "constant" but is not guaranteed.
Space by itself is quite dark. Light is the thing that is, well, light.
Depending on one's perspective, however light/energy is travelling through space.
Yes, that is the point of General Relativity, but I don't get your point.
Why can gravity effect light? I had no point though, although gravity is an interesting concept. Overcoming gravity is called levitation or the concept of manipulating energy and even the ability to realease light from the hold that gravity has on it.
A quantity we use to describe our universe.
Yes. It is a dissipative system.
No, but once it was.
Darkness is the absence of light.
Hypothetical: Could we have existed as energy beings without the need for time?
Energy that does not travel fast is usually dark, but that does not meant it is equivalent with darkness. After all the sun does not travel very fast.
Nothing, as speed is defined as the time derivative of location, it makes no sense without time
No, there is not a tiny bit of sense in this question.
Darkness is the lack of energy, but enough to give it the name "dark matter". The sun is a "mass of energy" in motion, not slow moving energy

I don't follow. Your ramblings of energy sound awfully like those of an esoteric.
They had knowledge that we no longer have today?
Yes, if energy existed we could use it to drive cars, launch rockets and post on CFC! Think of the possibilities!
You said, light is energy and manipulating light is my job. So I don't know about you, but I certainly can.
You are closer to God than you want to admit? A new twist on free will?