Are showers any real use?

In Oxygen Not Included I don't really see the benefit of showers. They use up a lot of space and water and most of the dupes are grimy most of the time anyway. I don't see any penalty for being grimy. In fact, the time showering seems wasted. Can anyone give me a hard numerical justification for building showers?


Solution 1:

In the Expressive update dupes gain a +3 morale bonus from having a shower.