No it isn't. Our distant ancestors would have been naked all the time, remember? Plus it wasn't unusual in some more recent societies (greek?) for everyone to be naked around each other basically whenever, and definitely for bathing.Vareoth said:Also, associating nudity and genitalia with sex is hardwired into the brain. It would require extreme amounts of indoctrination to overwrite that. It's just not feasible.
Basically you've got it the wrong way round. Thinking that nudity = sex/inappropriate is the result of societal indoctrination which is a holdover from more prudish Christian-controlled times. It isn't hardwired at all; being naked is basically the natural state for human beings, covering up is essentially a practical thing designed to prevent your junk from getting sunburned or scratched by thorns or frozen or whatever.
OT: This could work but provided there were some option for more self conscious/prudish people to shower alone.