I am grateful for the zipper.
Where would we be without the zipper? We'd be buttoning up our flies and it would be a little drafty down there at this time of year. Keeping mosquitoes out of your tent would be much more difficult. Little things would probably fall out of our purses, suitcases and backpacks.
The zipper is emblematic of human ingenuity and our ability to find an innovative solution for a practical problem like fastening two pieces of fabric together.
Does a day ever pass that you don't use a zipper?