The story of Abraham and Isaac always bothered me, too. It seems a story more representative of ((their)) cult's ideologies.
One could say that if looked at from the Judeo-Christian cultural perspective. There are also some other interesting texts out there from other cultures which I have reviewed.
Yes, anon, all legends. What is important about history is that it is most often written by the victor, not the loser. Until now, humanity has more often than not been the loser.