For sure! Smooth flowing lines and curves are the very best look you can get. Straight lines and corners aren’t as aesthetically pleasing as flowing curves. You also can’t get proper drainage with them. Realize that a 210 lb machine is laying your curb, it’s constantly moving so straight lines will NEVER be absolutely straight even when following a string line. You want the curb around your house to flow so it’s easy to mow and you don’t have to stop. You want it to transition cleanly to the next. Flow is extremely important and it’s the first thing you see when someone drives by.