What is wrong with the style from x number of years ago, you ask? Nothing, if the clothes still fit and are in good condition. But I assume you’ve bought a suit recently. Is it different than others you’ve bought in the last 15 years, as far as pattern, stripes and width, or no stripes, lapels, buttons, etc? People grow, styles change, and even if we were to make our own clothes, we would still have to buy the patterns available.
And for women, much more than many men, clothes are a form of self expression. B”H for that. I’d hate to be limited to a chador or burka.