I don't think you're lazy. Everyone has a preference and not pre-washing is yours. I've heard it both ways. I am a pre-washer and I use color catchers in case of the dye running. I pre-wash then starch as I get ready to sew. If a fabric is going to be stored for very long it will attract all kinds of creepy crawley things. Then when it comes off the shelf it's full of holes and things crawl out of or fly off it. Can't stand that. So, I wash when it comes in the door, all colors together with the aforementioned color catcher, then stored. My preference. I always wash afterward, too, with good results. The batt shrinks enough to make it look "old-fashioned".