Try not wasing it before you use it and wash the finished quilt. See what you get!
I always wash fabric. Preperation is everything, just like in painting. It is part of the process. I enjoy hanging fabric on the line and watching it billow in a breeze and then taking it off the line and ironing it. It is akin to a ritual.
"The Begining Ritual"
Everyone has their own preference though and you can have yours.
One of my reasons is that I'm really not that great a quilter so the better I can make the fabric look..... :D
peace