So how did the first cell come about, with all it's complexities?... then explain to me how the first molecule came about, with all it's complexitites?... then go back to the very first atom... where did it come from.... Nothing? How do you get something from nothing? Well?
We don't have a clue where abiogenises occurred. Hot vents have been suggested, pools of primordial soup have pretty much been ruled out (though most don't yet know this), and interstellar gase clouds. We are not much closer to knowing how the immense information content required for even the simplist life came about. Maybe some day in a lab the right sequence of events can be discovered that caused the normal entropy of chemical systems to held at bay long enough for a primitive form of RNA based life to arise. Rabies, measles and Ebola viruses are some well known life forms that do not use DNA and are true RNA-based life forms but as of yet there seems no middle road and it may be as likely that RNA life forms are the opposite of what has been assumed and they are descendants of organisms that had a DNA stage and for whatever reason lost it. It is often misrepresented that biology has only one arrow from simple to more complex but this is not based upon anything empirical and is more an expression of bias than anything else.
Something as essential as the ribosome, which is capable of reading the 30-40,000 odd genes of our genome and transcribing approximately 250,000 different complex proteins synthesizing them an amino acid at a time, shows a complexity that is absolutely essential to life as we know it.
"The ribosome is so fundamental to life that many portions of this molecular machine are identical in every organism ever genetically sequenced. " -Los Alamos National Laboratory http://www.sciencedaily.com/print.php?url=/releases/2005/11/051101223046.htm
Of course Charles Darwin, and his theory of evolution through natural selection as the origin of species, did not even address any of those questions. If you could get to New York and visit the Darwin Natural History Museum exhibit you might get a better understanding of what Darwin said, his research, and how the theory of evolution came about, and what it does and does not say.
Some of your questions are addressed here: Did Life Come from Another World?