Ok, I will play along.
You know you are crazy about fabric when:
you have ten 30 gallon rubber maid totes of it under the tables in your sewing room.
You use every coupon JoAnn's or Hancock's send you to buy more.
You look at other people's blogs to see what the fabric they use looks like and wonder where they got it and can you buy some.
It takes you hours to decide what fabric to use on a project because you don't want to use up all you have of any one kind.
Commentors on your blog even notice how many trips you make to the fabric store a week.