I'm obsessed with showers and also wonder why we are so spectacularly bad at making consistently good showerheads with consistently good pressure and temperatur

I'm obsessed with showers and also wonder why we are so spectacularly bad at making consistently good showerheads with consistently good pressure and temperature control. One issue the author overlooks is that we have minimal control over the temperature of the cold water, and this temperature fluctuates throughout the year (at least here in NY, not so much where I lived in SF). As a result, the range of the dial I use changes from summer to winter. There are hot parts of the dial I use everyday in the winter that would simply burn me if I used them in the summer. Temperature can even change during the course of the shower! I notice this mostly in the winter. I speculate this is due to the cold water in my building pipes being used up and then replaced by the truly cold water from underground. I once tried to shower with that icy water when the hot water went out (just before a big trip) and I managed to completely numb my lower body (I did not have the fortitude to try and shower my upper body too).