I'm not religious, and I haven't read about other people's interpretations much.
But the way I 'take it, (Not the way it 'is, as I don't know what it 'actually 'is)
Is if I was a Christian big on it being 'literal, then God chose some fellow (Abraham) who was known for his devotion to God, as a means to show and say to his people, it's great that you follow me, even to the point of sacrificing your children when I ask, but stop that, I've seen your faith, and that's great, but the true God is not like these other false Gods, so stop sacrificing your children.
In this interpretation Abraham is flawed, but devoted to God, and is thus rewarded, but the lesson 'I'd take away is human sacrifice is wrong, rather than do everything God says.
If I was 'less big on it being literal, then I could interpret it as some devout guy, without being 'literally spoken to by God, instead being 'spoken to by God by less literal means, whatever those might be. Making the motions to sacrifice his son as might have been common in the land he was currently in, and then 'not doing it, instead 'substituting the sacrifice of a human with an animal, and encouraging others to do likewise, speaking as it were that he believed it was not in the nature of God to demand such of man.
In this interpretation Abraham is devoted to God, but does not believe God would 'truly want such, but the lesson 'I'd take away is human sacrifice is wrong, rather than do everything God says.
If I was even 'less literal, then I might look on it as a story based on realities of the time more or less, but a story speaking of a people who believe that human sacrifice is wrong, and that their God does not actually want that.
But I'm sure there's people with different opinions of it than I.
. . .
I often doubt that the. . . media is 'everything so to speak. Some media is powerful and tends to evoke certain patterns of thought in people, but in the end it's just a mirror that reflects us.
. . .
Also I'm sure some people might want to complain what about Christ as a human sacrifice, well, I'm not a historian/theologian.