I hand piece some. My mother always hand pieced and hand quilted all her quilts. One reason I don't hand piece as much is that I have arthritis in my hands and it's more difficult to make small stitches. But hand piecing and hand quilting in my opinion is the best. Quilts are so pretty hand quilted.
Not to say the machine pieced ones aren't because I have seen a lot of beautiful machine pieced and quilted quilts on here that look like museum quality.
I guess it just depends on what each person likes or can do.