My question is why do we need so many? I am such a practical thinking person, ugh, I have to have a logical reason for everything it seems. I do want 1 more if I get an Easy Quilter to use with that. Also, I think another to sew on and one to use the embroidery machine so I won't have to use the same one. that' s for convenience. 2 is all I can come up with that I "need".