Because first, you don’t need a wardrobe full of clothes. You need a wardrobe with the right clothes for you, your lifestyle, your taste, body type and style. And for that you don’t need 100 tops for 1 trousers. Secondly, if you want to look your best, your clothes have to look good. Not only on you, but on their own. They don’t need to be highly expensive but they need to look expensive, to have some quality degree. That can upgrade your wardrobe and your look way more than a 100 options to 1 trouser. Way more.
Plus when you invest in quality you will have a piece that will last longer, so you will need to buy less clothes. In theory at least, you will. This will be a good investment.
So always go for quality over quantity. Always.