There are no definitive answers since it all lies on theory and guesswork, which isnt truly science.
Whatever you choose to believe deals with faith not fact.
I mean you are right in some sense but just because it's a theory doesn't mean its guesswork. That's like saying gravity, which is also a theory, is guesswork and not truly science. Something takes intense pier review and criticism to become a theory. Evidence upon evidence has been compiled in favor of evolution.
Faith requires no evidence, no fact. I could have faith in a unicorn bringing me candy every night. Doesn't make it real. Doesn't make it a good way to view the history of the cosmos.
When I used "theory" it was in the traditional sense of the word not the one used in the scientific community, why?
Well simply because there are no proper or uniformly accepted "scientific theories" on how life miraculously sprang into existence.
The origin of life is one of biology's biggest unanswered problems.
Scientists are good at understanding processes that they can study, abiogenesis however cannot be properly analyzed or studied so the scientific method cannot even be properly applied; it is ultimately founded on pure speculation, not proof.
Faith is a belief that does not require proof which is why I noted that anything you believe is pure faith. Not to mention, to believe life sprang from inorganic matter conflicts with the Law of Biogenesis, which states that life can only arise from other life. If a law is broken once then it isnt really a law anymore is it?