I think quilting, like any hobby, we tend to keep our eyes out for something new, or different that we don't have. or forgot we have.
I did it yrs ago,when I was into designing/decoration stationery and greeting cards. Every time I went to town I can home with more supplies. plus new art/design books.
My daughter says she did the same with scrapbooking and now with jewlery making. Later we wonder why we bought so much.
I figure when I am home working on my hobbies I am not out spending money or gambling or such, which can run into money too.
PS no I will never use up my stash, but have fun trying.