I have this "itis" too for fabrics that I buy because I can't resist them.
I have another "itis" too. On the sales table, I like to pick fabrics that coordinate and buy about a yard of each for a future quilt. Those little collections have come in very handy when I want to make a quilt for someone and don't want to go find fabric for it. My "itis" involves raiding one of those coordinating fabrics when I need a fabric for something else.
I shouldn't read this forum when I'm on a camping trip. It make me anxious to get home and do some quilting. I wish I had brought my sewing machine with me.