It's not lazy, it's a preference. I do not prewash. I buy many bolts of fabric at a time. I like the fabric stored on the bolts so I can see what I've got. I also like the crisp new look and feel of the fabric. I like the way the quilt gets a little wrinkly when first washed. If I'm worried about colors bleeding I soak the quilt in cold water and vinegar for 15 minutes before washing or use Retayne. I've heard good things about the new color catchers but haven't tried them yet.