This is so true. My SO purchases clothes that are made from terrible materials, with stitching that falls apart.
Womens shoes exclusively seem capable on only lasting 6 months of regular wear. Everything from straps, buckles, soles and innersoles seem to fall apart.
The ultimate insult in all this is that they always cost more than the equivalent male version. The only exceptions to this are where the two items are equivalent (ie mens/womens levis, mens/womens running shoes).
I don't like buying clothes unless they're made from natural fibres/materials. It's cotton, wool + leather for me. For a woman, it's virtually impossible to stick to a rule like this.
I guess it's all about the fashion and style, and they aren't expected to last due to the built-in obsolescence of womens fashion.