When I was a younger quilter, I remember that there was a prevalent mindset that said-- good quilters do not trim to size after piecing-- they cut precisely and stitch precisely, and the resulting block was precise and needed no adjustments. I think it led to a lot of frustrated quilters and people who walked away from projects (and the pursuit of quilting). The 7/8 markings on my rulers don't get a lot of attention anymore. For me, a lot of it has to do with the realization that my time and the enjoyment of creation are greater factors than no-waste stitching and extreme detail.