Judy, I always say outloud when I see a ship has a laundry room, "I can think of a lot more things to do on a cruise than doing laundry."
Of course, the longest we have taken is 7 nights, so perhaps on a 14-nighter I may be more inclined to do a load of socks and underwear.
Just as an FYI too -- the shower stalls nearly always have one of those stretch-across drying lines, which are great for swimsuits or a quick rinse of anything. (And I have to admit it, I have hung a swimsuit from the balcony railing when we are at sea.) :-)