I only ever sew straight lines. I tried a drunkard’s path block once – yes, just one curve, just one time – but otherwise, my sewing is limited to joining squares, rectangles and/or triangles. Which means my designs tend to be limited to squares, rectangles and triangles too.
I’m sure I’ll eventually settle into curves, in both my sewing and my designs. I’m not averse to them; I just feel like I’ve still got a lot to learn about straight lines before I venture into new territory. In the meantime, it’s interesting to see how many shapes can be constructed using only straight lines.