I will prove to you that God exists

[The Architect Of Fate]

Its not an assumption, life on earth is the only life we know of. The issue isn't just life, there is fine-tuning involved from the moment the universe came into existence such as the fact there was more matter than anti-matter. The cosmological constant is fine tuned so the universe neither collapses on itself or expands into thin matter. Gravity (in just the right strength) causes stars to exist which then through nuclear synthesis cause the ingredients to make planets and the type of matter life depends on. The existence of dark matter is still relatively new, yet we know sooner discover it then find out its necessary to keep galaxies from flying apart. 

Your whole argument rests on the assumption the universe must be in it's current configuration to have life that the physics we currently have could be the only ones etc etc etc ........Assumptions.. Assumptions.. Assumptions . All you can say is this universe resulted in physics and life like us. That doesn't get you to fine tuning let alone god.

Bull. We only know of one planet that has life (we know of many more where life didn't adapt). Apparently it didn't even adapt on Mars which was quite earth like early on. 

Nope it's not bull in the slightest we only know of one planet currently that has life that's proof live adapted well to earth and not elsewhere and nothing else

A scientist dude. Why should I pay heed to your opinion? 

That doesn't make his opinion gospel. You free to ignore me if you want it doesn't change my point 

No amount of circular reasoning caused a universe suitable for life to exist.

But circular your reasoning remains