Why do some jeans have buttons instead of zippers?
Besides, why are buttons better than zippers?
Zippers were meant to be a faster way to join clothing around a person. Buttoning is slower than zippering. Zippers break easily because zippers' teeth are held on by grabbing an edge of fabric tape or by thread (coil zippers.) Buttons break easily because they're held on by thread.
Additionally, why do button fly jeans exist?
While zippers pull up and down from the same vertical plane, there's something about the way buttons pull in five different directions that makes them feel more custom fit to your body. There's also more give with buttons, so the fabric around them stretches and forms to your curves like a zipper never could.
Buttons are not exactly the easiest to work with but they do offer amazing aesthetic value. This is seen especially when they are used on high waist jeans. It is a great way to make a fashion statement with a subtle detail. Button flies are also less likely to come undone if the fastening is done properly.