Side question: Why do people buy baguettes? Do they make sandwiches with them? How do you even make a sandwich from them? How are you meant to beat a baguette???

Side question: Why do people buy baguettes? Do they make sandwiches with them? How do you even make a sandwich from them? How are you meant to beat a baguette???

The rectangular loaf became popular due to packing efficiency. You can fit more of them in less space.
Okay, why not hexagon shaped bread?
Ease of manufacturing the bread tin. Ease of extracting the baked bread from the tin. Hexagons do not pack better than squares.
How high are you stacking your bread
Depends on how high I get first.
Because you can stack rectangles into bigger rectangles, can’t really do that with hexagons.