First of all, I wasn’t there when the book was written. Nor was I at the beginning of time with God. There are many different views on how Genesis is interpreted and whether or not creation was literal or a framework. If it was seven literal days, great! I’m sure God is capable of fully gifted creation. If it was 7 long periods of time broken down into a chronological summary so that it was easier for people of that time period to understand, awesome!
Again the problem is when people tell you that you are going to hell if you don’t agree with their particular interpretation. Just as with the book of revelation, why spend your time arguing about the two most difficult to interpret books of the Bible? I keep forgetting what these people are basing their salvation on.