Ancient History Isn't Very Old

Humanity was running around in Europe for tens of thousands of years before the bible stories (~2000BC). It's very weird that there's really no extant cultural information that flows down to us prior to that. Why does "history" seem to start then and there at the beginning of the astrological Age of Aries?

There's archaeological and genetic evidence, but no coherent story, at least in Europe and Asia AFAIK. A handful of people make claims about ancient pre-historical traditions (like the Bock Saga), but as far as I know, those claims don't seem to square up very well with any verifiable proof. The "Rigveda" in India is celebrated for it's antiquity, but it dates to ~1500BC or so. The Bible stories are about ~2000BC, but it actually wasn't compiled until later as far as I understand it.

It's possible that writing accidentally obliterated ancient traditions. Writing literally made people forget. It's also possible that an aggressive political/religious group purposely blotted out prior knowledge, the same way the Catholic Church did in Europe. Maybe the older tradition was lost then and there. Nobody really knows.