Anthropologically speaking this is the best answer. Our brain needs a certain span of time to establish perceived reality.
No physical mechanisms predefines future events (or is there one ?).
So, I could state that the future does not exist yet and the past as ceased to exist.
in that statement I have a problem with the definition of existence. Does the definition of existence exist itself ? This is (is it ?) more a problem of terminology than philosophy or physics.
Humanity is so stupid when it comes to "territory" and we are not the only species that acts like beasts about it.
I read through these and try to understand them but mostly I don't like those theories, because (in part) more and more there are disparities between them and observations.
So I came up with some ideas myself, one of which I wrote in here :
"New physical cosmological model : is it coherent ?"
But it may take a few years or a few thousand before we have a good cosmology.
Those black holes allow the Penrose process which is somewhat similar to what I am talking about here.
I often think about this in the shower
P.S. : Also, i just read the rules and I believe I follow them
The original Big Bang also violates conservation of energy.
For the moment this is just a shower thought. More work would have to be done along these lines.
Those mostly create magnetic and electomagnetic radiation. Some are also magnetars
There is already a link in my post for one big source of gravitational waves
Cosmological Microwave Background