Funny digression7! I do think it really depends on the piece of clothing you have in front of you.
Underwear and socks always go straight into the laundry after one day. I usually don’t want to subject my fellow humans to wearing the same T-shirts again the next day either. Jeans, sweatshirts, and the like last longer. Jeans can even go the whole workweek. Four weeks seems weird to me. Something like fleece is often due for washing after just one day. And yes, daily showering or washing is a given.
Since we’re chatting so nicely about this: because it was everywhere written that you can generally wash laundry at 30 degrees nowadays, I started doing that as part of general energy saving. It wasn’t such a great idea... T-shirts fresh from the closet were ready for the laundry again after 30 minutes of wearing. Yuck. I went back to 40 degrees. Since then, everything’s fine. Now the washing machine has died. With the new one, I’m using the Eco program and it works very well. It just washes longer.
Clothes from Shein or Temu are a no-go for me. I’d rather shop at Momox...