It isn't about my viewpoint being superior to yours, or anyone's. Our only authority for doctrine is the New Testament.
Jesus said, "I have not come do abolish the Law, but to fulfill it."
No, I don't adhere to the Ceremonial Law, etc. But, you can't understand the Gospel without understanding Genesis 3. You can't understand marriage without Genesis 1 and 2. And so on...New Testament doctrine cannot be understood apart from an understanding of the Old Testament...and particularly, the Book of Genesis.