I am one who doesn't prewash. So far it has not been a problem for me. If I ever select red fabric, I would prewash that so it wouldn't bleed on the rest of my quilt. Other than that, I am quite happy not prewashing. You will find both opinions here. I am not sure which way the majority would vote...probably prewashing. Oh well, I never claimed to be normal.
Welcome to quilting and to this group. It is a great place to learn about anything you want to know about quilting. Any question I have ever asked has been answered, usually immediately!!
Dina