Dark refers to not interacting with the electromagnetic force, i.e. not producing or reflecting light/radiation. We "see" dark matter through its gravitational influence.
Your post is based on nothing but stereotypes.
Humans today have a quite high level of plastic in their blood, which, according to studies of fish, strongly reduces fertility. (for reference, see Plastic Planet).
It actually does not. You can even get faster performance with garbage collection.
Imagine a hot Universe at an early time (which may be very large, even infinite). Photons are suddenly released and go in all directions.
The Universe expands (meaning the distance between everything increases). The photons are still traveling through the Universe.
At any point in time you can observe photons arriving at your position, and they are as old as their origin is away in light-distance (well, space expanded in the meantime, that makes it a bit harder to imagine).
So, you can observe the background at any time, from all directions. It gives you access to the space where the photons where released, called a "last scattering surface". As time goes by, the photons have to be older and their distance larger, to arrive now.
It's not like it's going anywhere, right guys?
Actually, the cosmic background is going everywhere.
I predict that as heat-death approaches, time will slow down, and by the point of heat death, time will be at a complete standstill, much like approaching the event horizon of a black hole, so from its own frame of reference, the universe will actually seem to last forever.
Sounds like you don't understand time dilation. When you approach a black hole, time does not go at a different rate for you. It does however go at a different speed compared to an observer at a large distance (that's why time is *relative*). For them, all objects falling towards a black hole actually seem to pile up near the event horizon (but gravitational redshift and time dilation make the radiation gradually unobservable). For the person falling in, nothing changes, they just fall through.
To summarize, time never slows down, it may only slow down in one place compared to another place. You did not specify two places so your statement does not make any sense.
You will have many recoverable tape errors.