I've had a quick skim over the thread, and just to answer some questions/assumptions that have been made about literal 6 day biblical creation...
In the beginning God... that's how the bible starts. God is eternal, no beginning, no end. No, we can't understand this, our minds are limited by time - it is faith to accept that God was the beginning, is the end, all things are in his hands.
Correct that the sun was not created on day 1, only on day 4. But each day was "evening and morning" and was a day, the sun was not there from the beginning of time, perhaps so it should not be worshipped, perhaps not, regardless, God made light, and the light was the day and the darkness was the night, until the 4th day.
God created man in perfection. This is key to the understanding of the human race. Utter perfection...not one cell, not one flaw in the human body, super human almost - hence he lived until 900 years, there was not the existence of disease.
The biggest key in the understanding and acceptance of Christianity is that there was NO sin in the beginning, hence the perfection. Humans were vegetarian to begin with - as there was no sin, or death, no animals had died, therefore man ate fruit and vegetables and was sustained on this. No sin, and the perfect human body is the reason why Adam's sons AND daughters (Get 5:4) were able to marry and reproduce. Don't go to the bible with our 21st century logic, it won't make sense to your thinking, look at the 21st century with biblical eyes and it makes more sense then.
Sin came into a sinless world... God set Adam a test, which he failed, therefore cursing the rest of humanity to be born in sin. This is also another crux to the understanding of Christianity. Sin equals death, sadness, tragedies, crime...indeed Adam's son Cain murdered his brother Abel in jealousy. Nobody after this was born good, save Jesus, who did not have an earthly father, therefore the lineage of Adam not passed to him.
Fossils came about when there was worldwide flood of the earth, the flood is not only rain for the 40 days and 40 nights as we traditionally know it, but the bible states that it was an eruption of earthquakes, and the ground literally splitting apart. Everything on earth, save what was on the ark, yes, including dinosaurs (average size of dino is the size of a horse, there were large and small ones), was buried quickly in the layers of earth that shifted and adjusted. Want to see evidence of this -- grand canyon is a good example. There are layers upon layers of rock and fossils buried there. Now we can assume one of two things, that either each layer took millions of years, or that it happened quickly and catastrophically in a very short amount of time. The second fits with what the Bible tells us.
Marrying brothers and sisters did not last, this was prohibited quite quickly after the beginning, as soon as sin came into the world the human life span quickly shortened after the first few generations. Because of the flaws that came into the body it very quickly became wrong to marry close, children born to close relatives often have problems, and this is why.