No, it does not mean that we share their beliefs. Why should we? We've learned so much in those many thousands of years. I ,mean, seriously, most of us don't hunt and gather for a living, why would we share their primitive beliefs about how the world works.
As for you tracing your ancestry to Abel's wife, you can satisfy my curiousity. What was her name? Was she Abel's sister? If not, where did she come from? If she wasn't Abel's sister, who were her parents? Who "created" them?
If she was Abel's sister, you are admitting that you are inbred on a fundamental level, and your genetic flaws probably account for your believing that there actually were such people as Adam and Eve and Cain and Abel and Seth .... LoL