Disappearing Underwear

My underwear used to always disappear onboard. It wasn't just one trip, it was nearly every time. I now have a small bag that I take out my underwear in and I always time when the washer or dryer will finish so I can get to the laundry room and get my stuff as soon as possible. It's really annoying that you can't just be relaxed with it as you would at home. It's such a small thing but it makes me so angry that communal spaces onboard are not the same for everyone