"It's all random all the way down" is just another religious belief. Besides, has anyone estimated the probability of creating organisms so complex using this random evolution scheme? Another problem is why would randomly-evolved organisms be so geometrically symmetric? I'd expect a random process to create an unholy blob of matter.
You're lacking imagination and understanding of how these systems form. Symmetry is very commonplace in nature, for very unsurprising reasons, because what's random is how the processes that create those forms change over time, not the entirety of those processes themselves. And yes, there is a huge amount of study of how life could form in the kinds of environments we think existed on earth near the start of life. ATM it's not so much 'how could this happen at all' and more 'what looks like the most likely way that it happened'.
It's not. It's derived from real time observation, logical induction and other historical evidence that's inline with logic and observation. See my other reply to a sibling commenter of yours.
