I do make special quilts with 100% quilters cotton and the best thread I can afford. BUT as a keen repurposer/recycler, there is not a fabric I won't put in a utility/fun/car/couch quilt. All good clothing goes to charity, but if it's not nice/good enough for donating I cut all the usable pieces and make quilts. Funnily enough, they often turn out better than my 'proper' quilts....I have a lot of fun messing around and practicing new techniques....guilt and pressure free so to speak. I have even used my (now retired) husband's work clothes, high visibility yellow adds a funky touch. I am highly critical of my quilts, but somehow, my waggas (Aussie quilts) and utility quilts seem a bit more special to me....