I travel two different ways. Either with kids, or for work.
Either way I try to travel as light as possible. I don't want to pack more than 2 days worth of clothes if I can avoid it. Having kids means they are going to bed early at least every other night and most hotels have a laundry room.
I just don't want to deal with it.
Plus wherever I'm traveling probably has a store where I could buy a shirt if I really needed to. Hell, casual wear is my usual souvenir when I travel anyway. Trucker hats especially, but hoodies and T-shirts as well.
How much work is doing laundry? Put it in one machine, press a button, put it in another machine, press a button. Fold it enough that it doesn't wrinkle. Done.
I'm just gonna sit in my room and stare at my phone during that time anyway.
It's more about how much luggage I have to tow around with me, baggage claim, etc. Airports make me anxious. They're big and open and crowded, I just want to get out quick.
I have no idea why there's downvotes on this. Whether it's for a day trip or two weeks, ideally I'm bringing a single backpack, and I'm always a little miffed if that's not possible.
Particularly if I'm going somewhere urban, I go to a laundromat one morning, grab a coffee from nearby, make some small talk with the locals or just chill waiting. It's a nice break before going on with the rest of your day.