One of the things my father did to me was forced everyone to take showers together (and that was the one shower a week that I was allowed to take . just before church on Sundays). Supposedly it saved water and time and to that I say BULL Fkin SH**! I get a little animated on this subject because I was subjected to it all through my life.
For me even when I was 14 years old, I was still required to take showers with my father. Ok, if you understand that at 14, puberty is usually hitting and yeeeshhh,, this was beyond sick! My father would either make me shower with him or I had to always wash his back or whatever when he was taking a bath. Don't know why it was just me, but I hated it... it still sickens me to this day thinking about it.
By 9 years old, a kid should be able to take a shower on their own. Saving time,,, saving water,, whatever the excuse... I just don't buy it. I may be a little biased but I don't buy it!