We've had a washer/dryer in our last three rigs. Our first fiver didn't have one. We were still working, and most of our trips were about 12 days. We're active hikers. So, lots of dirty hiking clothes and socks. We didn't have enough clothes for the entire trip. So, most of one day was lost to the CG laundry. Screaming, crying kids, dirty washers, etc. Had some clothes ruined because an oil patch worker washed his oily clothes in the washer. Without a washer/dryer we lost another day when we got home washing all our dirty clothes, sheets and towels.
When we got a washer/dryer installed in our second fiver, it was a God send. We could pack about three days worth of clothes for a two week trip! We could arrive home with sheets slept on one night, and the only dirty clothes were on our back!
Now retired, we winter in AZ for 3 1/2 months and take longer trips to Utah to play. We live simply and don't go out to fancy restaurants. We Jeep, hike and UTV. So lots of dusty clothes. We carry about five days worth and wear the same things all winter. Takes some planning but beats the heck packing the MH to the hilt with clothes.
Wouldn't have a MH without a washer/dryer.
