Oh? I meant that as sufficient proof that urination is
outdated in the Trek era!
If we're going to go by the "proof" that they haven't shown it, therefore nobody urinates or deficates in the future, then we have nearly 100% of all of the TV shows in history showing the same proof in their shows. By that reasoning, nobody did it in The Waltons, Brady Bunch, Growing Pains, All in the Family, I Love Lucy, How I Met Your Mother, WKRP in Cincinnati, Taxi, Cheers....
I must set the record straight here: All in the Family made TV history by making the "terlet" flush a running gag. I also remember an episode where Ma was looking for Archie and Mike said "He went upstairs and I think he's going to be awhile...he took the Daily News with him".