I do not aim for perfection. I do not enter competitions and I do not sell my quilts. I quilt because I enjoy the artistic creativity of quilting. Most of my blocks look really good and match up well, but I can think of 2 blocks (from different quilts) that I was off enough that when I insisted the seams and points match just perfectly, they bowed a bit. Both drove me crazy so eventually I ripped the seams out and sewed them back together "unperfectly" (meaning the corners and points didn't quite match) so they would lay flat. To this day, I can't even remember which quilts the problem blocks were in and no one that isn't a quilter would probably even notice. My friends and family tend to look at the overall project rather than the details.
Now if I was entering in a competition or selling a quilt for profit, I would feel compelled to be as perfect as absolutely possible, which is why I'll probably never do either of those things.