Your existence is insignificant. You are a here for a fraction of a fraction of a fraction of a fraction of time. You are highly insignificant in the world, and the world is insignificant in the galaxy, and the galaxy is insignificant in the universe. The Earth is tiny and is only here for a fraction of time, a blink of an eye in the larger scheme of things. You will be completely forgotten and so will any memory of you. Nothing you ever say, do, or think will ever matter in any way, shape, or form, and neither will it last in any way.
You are completely and totally insignificant.
Too small or unimportant to be worth consideration.
(of a person) Without power or influence.
trifling - trivial - negligible - unimportant - petty
A graphical representation of your insignificance:
-http://workshop.chromeexperiments.com/stars (Chrome Only)