Some day, you might fly off for a week to Myanmar, with a fresh pair of cycling shoes you bought in China, with glue that doesn't pass the sticky test, and after less'n a week, the soles fall off, in which case you gotta find an itinerant cobbler to, umm, cobble your shoes together, assuming he has a portable sewing machine capable of stitching through soles. Street cobblers in China would have full-size industrial sewing machines, but this guy in the photo outside a temple managed it AWL right.

Same goes with other bits of clothing and gear and new parts you add to the bike, they need to be broken in, not fresh out of the box. Need to get some kilometerage (furlongage in Myanmar) on the stitches and the zippers and the cogs, etc. New stuff, if defective, tends to fail in the first few days of use.