I was certainly guilty of “tunnel vision” for several years re the early chapters of Genesis - I used to believe in a literal “six days” of creation, but I eventually accepted the science that says the earth is possibly billion of years old and that life began possibly millions of years ago as relatively simple organisms.
For thousands of years, most Bible-believers held that all creation took place over six literal days, and it’s evident that many Bible-believers today have trouble accepting any other interpretation, as they seem to think a non-literal interpretation is somehow false and is giving in to an evolutionary paradigm. But this is not so, as I reject biological evolution and accept progressive creation over millions of years - a process which actually fits the fossil record much better. The fossil record does reveal a kind of “evolution” of creatures, but the many gaps and the distinct lack of transitionals suggest a process of progressive creation, rather than a contiguous process of biological evolution.
The Bible is not a science book - it’s purpose is to reveal the relationship between God and man as it pertains to salvation. Hence, the description of pre-Adam creation is described only figuratively in Genesis 1-2. It is described figuratively because what happened on earth before the creation of man is not important to salvation (besides being rather lengthy!). God left it to the intelligence of humans - ie, science - to eventually reveal what happened on earth before Adam and Eve. This revelation (provided by God’s creation - nature) didn’t occur until the twentieth century, revealing also that the age-old “six literal days of creation” interpretation, while understandable and acceptable, was false.
I should also add that accepting an old earth and old life opens up a whole new world of investigation for me. It’s all rather fascinating from a scientific perspective.
For a long time I used to cite Mark 10:6 as a “proof text” that Adam and Eve were present at the beginning of creation, but eventually I released that I was taking Jesus’ words out of context. The passage actually refers to the fact that God instituted marriage at the creation of Adam and Eve.