Originally Posted by fleurdelisquilts.com
the problem with stocking up (stock piling at least)is that the tread eventually dry rots and breaks up when used. That takes years so don't panic, but don't buy enough for the rest of your life!
When I have cotton thread that wants to break easily when I try to sew with it, I stick it in a plastic bag and place it in the deep freezer overnight (and, yes, my husband gives me funny looks). When it defrosts it becomes very pliable again. Hey, stock up girls and guys - just leave room in the freezer for it LOL.