So the Human DNA chain is more "fit" as you claim. Bullcrap, fit is a term you're using as a synonym to complex. You're right, things that are fit survive, things that aren't don't. But things DO get more complex (DNA chains, multicellular organisms, brain patterns, intelligence quotient etc). The concept of fitness is the biggest crock of s^*t I've ever heard.
I would appreciate a civil discourse. If you don't have it in you, post to someone else.
Thiobacillus ferrooxidans and humans are quite fit for their respective environments and neither could even come close to making it in the other's backyard. And they are both here right now. Yet humans are clearly much more "complex" (whatever that is) than Thiobacillus.
Open your eyes. You are not the only thing infesting this planet and the simplest microbe is just as fit as you are.