Peace, you made an interesting statement.

"Eventually we get to the question of 'what causes life' or 'how can something so complex possibly exist'? And there we run into the wall. For all our sophistication, we have no answer."

There are many answers. Suggested reading, "The Origins of Species" by Charles Darwin.

Complexity of life is explained by evolution. It didn't just happen.

Life is a series of chemical occurances that evolved from a single-celled protozoa.

It's been pretty well documented.

Frank Hamilton