And before that, the Greeks would write one line left-to-right, the next line right-to-left, the next line left-to-right, and so on.
I have seen pictures of ancient Roman texts - I’m almost positive they were Roman - in which the text was boustrophedonic, and further, the characters written towards the left were indeed the mirror inverses of the characters written left to right. Which suggests that when the Romans gave up on boustrophedonic writing (which, as mentioned, they inherited from the Greeks (through the Etruscans)), it did indeed cause the characters to be oriented as you describe. So I think that, indeed, the relative ease of writing these characters compared to how they would be if they were backwards is the result of the direction we write in.
(I may have some historical facts wrong above, since I sometimes forget details.)
I brought normal work to a stop at my community college library with a simple question relating to this term. “Boustrophedonic is the ox-plow style of writing (one line right-to-left, next left-to-right), but what is the techical term for left-to-right or right-to-left writing?” Never did find out.
As mentioned in posts 5, 7, 15, 16, 17 and 18.
Aboustrophedonic?
Ah, it’s a 1920’s style “of writing”.