Everything is shit for a reason. Unfortunately that reason is completely bogus.
It started with the Industrial Revolution, the pretext for which was, in essence, better living through mass production, both in terms of better employment opportunities and more diverse, cheaper yet better goods. In reality, the motive was warfare - the need to mass produce arms faster than the "competition".
This was the birth of the War Economy, and subsequently Consumerism. It also marked the end of self-sufficiency, or what is retrospectively defined as the "Cottage Industry", and with it the art of craftsmanship.
The end result is goods and services that are certainly "cheap" in quality, but not in price; diversity that is not really as diverse as we like to pretend, due to both corporate monopolisation and product normalisation; and jobs that are increasingly minimum wage, zero-hour contracts that are barely enough to survive on.
In modern parlance, it's a race to the bottom, and sadly that race is now over.