I have two large but shallow plastic containers of fabric and even that much of a stash makes me anxious. I don't really want a big stash--except for basics such as white, black, red, other neutrals-- because I don't like having projects-in-waiting. When I look at the fabric I have, I feel an urgency to make it all up right now, which of course is impossible.
The only reason I have as much as I do is that I can't resist fabric I see and fall in love with. I usually buy it having no idea what I'll do with it. I did this, too, when I made all my clothes and saw fabric I loved, but for some reason it didn't bother me as much then. One of the reasons it does now may be that I keep too much of everything and I've run out of storage space!