Most clothes are complex items and the manufacture of them is very unlikely to ever be fully automated within a reasonable time frame (such as our lifetimes). People will always be a part of the process. Many tasks are just too expensive to automate vs a cheap labourer.

Clothes should be like many other things: cost more, have better quality, longer lifespans and have less negative impact on those who produce them and the environment where they are produced & recycled.