Good quality cotton hemp or flax clothes will easily last 30 years if you take care of them.

Good quality leather and wool can last 50+ years, longer if you take proper care of it.

Planned obsolescence has warped people's minds.

Their synthetic products with poor quality stitching has people thinking that these things are not meant to last.

The polyester t-shirts that fall apart after 6 months etc.

The vinal fake leather crap, and all the plastics and crap.

People just don't expect things to last anymore and therefore do not take proper care of them like we used to.