You can if you choose, it's just something that is considered socially.. different? I don't want to say unacceptable or taboo, but there is reasoning. Build up of sweat and bacteria on your clothes and body makes it smell, that smell is typically offensive to other people even if you can't smell it, many other people do. I for example wear very much the same outfit day to day, but different sets, and wash other once a week. When I was lower income I would stretch out how long or how many times a week I wore a set of clothes. Now I am able to buy several pairs of the same jeans, so I can have clean other every day, but still feel comfortable in what I'm wearing. IT technically is societal construct, you can wear what you want tbf. People may just look at you funny if they notice you wearing the exact same thing every day and notice it get dirtier, like if you work next to the same people every day.