Something has always existed, because by definition nothing does not exist and can't do anything. 
Anyways, lets say you have a chess board (the universe) and you know how the pieces move around (mathematical relationships). Eventually you will execute every move (as the probability of any possible event occurring reaches 1 over time). 

Eventually you'll be sitting here, reading this message board, and have no clue whether you're the first "you" or another "you". You certainly don't remember what you were before you were born, so you should probably not stress too much of your impending demise, you as a part of the universe, will be recycled. 

From star dust to Earth dust, it'll continue to happen as long as the universe continues to exist. Is the universe a constant? Do constants exist? Nobody knows... yet... 

Do you really want to live forever? Is immortality really that ideal? Well guess what we're already living forever, our molecules, the brain, just take a different form. The interesting part is that we are literally the universe. We are the way for the universe to know its very own self. 

Still don't believe me? Read into epiphenomanilism. Physical entity (molecules) to brain activity (electrical entity) to physical entity (molecules) again and again. The fractal of existence.

If you haven't guessed it yet I'm a comedian. Everything I fucking do is a joke. Everything is a fucking joke. HAHA. That guy mike? He's dead, fucking pathetic faggot. Or maybe he never existed. Did a mike ever exist? I don't remember him at all, was he in one of your classes? Maybe his name was John... Nobody fucking knows, that's the POINT. The point is that nobody knows ANYTHING.

Im high 360% days of the year

[8:14:40 PM] Michael Smith: I understand what shadows have shadows means too
[8:14:45 PM] Michael Smith: because every single fucking thing
[8:14:48 PM] Michael Smith: in the universe
[8:14:51 PM] Michael Smith: has an isomorphism
[8:14:58 PM] Michael Smith: to which something is smaller
[8:14:59 PM] Michael Smith: than itself

I think that the war has become more of a spiritual one now instead of a mechanical, our bodies are already taken care of the biggest threat is ourselves now. Our psyche. So we're evolving through our minds now, not bodies, natural selection is now being selectively controlled by our society, not reality. Our reality is governed by ourselves.

I feel like an atom being split in two
Or not even being split into two, but becoming two atoms at once
Constantly switching between a sick sadistic psychopath
To a benevolent visionary more radical than Buddha
A constant battle between Eros and Thanatos
Why won't one side win?
Am I to be torn apart internally eternally?
I don't even care who wins any more
I can't think about what's right or wrong
I just want to be a person, whoever it may turn out to be
Being a being is being denied to me

I believed man was a creature of solitude
Pursuing an image of a powerful lone wolf
I didn't realize those very wolves
Were not alone by choice
The howls are a nod
To the only other being
That possesses a degree of its loneliness
The contrast of the white wolf
Against a dark world
The glare of the white moon
Against endless dark space