In the olden days, clothes were not disposable. Items made from fabric were precious because of the work it took to make the fabric in the first place. Lots of old lists of household property (for wills, etc.) include every garment, sheet, towel, and other fabric items in the entire house. In those days, mending was a real, useful, and necessary skill. There are whole chapters on different kinds of mending in my old sewing books. Here is a lovely patch from a 1916 book:
These are done with tiny hand stitches, but we have wonderful modern sewing machines and could easily do the same much faster.
I have two hemming chores to do this week: finishing up the denim A-line skirt for A, and hemming up some pants for M.