No, line length is for legibility. > I could care less [sic] about this design We can design it to be legible on narrow and wide displays > your choices are

No, line length is for legibility. > I could care less [sic] about this design We can design it to be legible on narrow and wide displays > your choices are to either leave white space or use larger characters unless we want multiple columns We want multiple columns. That way you don't have to prescribe one single viewport width, you can support a range (this is called "responsive")