I grew up in a large family (ultimately 10 kids) where there was always one and often two babys-in-diapers in the house. My mother used cloth diapers - attached with safety pins - becasue disposable diapers weren't "invented yet". My mother rinsed them in the toilet bowl (no, you will not die if you put your hand in a toilet bowl - even if there is a household member's shit in it) and then they went into a diaper pail with a bit of dilute Clorox solution in the bottom, next to the toilet. When the bucket was full, they were washed. I certainly don't recall it being every day - maybe every four days - the other kids clothing being far greater volume of laundry. As far as people are using excess resources in washing cloth diapers, it may be becasue of excess corporate-manufactures germ-o-phobia that need to go.
But why the hell is a single cloth diaper costing $30.00? Is that like the way the price of a plain plastic drum or trash can goes from $5.00 to $100.00 by simply renaming it a "compost bin" or a "rain barrel" for sale to the bourgeois liberal affluent class who are trying to buy their way to green salvation - like the Catholic Church selling of indulgences to the rich in the middle ages?
The manufacture of the paper, plastic, and who knows-what chemicals in a disposable diaper pollutes more (ever seen and smelt a river downstream of a paper mill?) and most importantly, produces far more CO2 emissions (and methane emissions when they go to the landfill) than reusing cloth diapers assuming one is doing full laundry loads particularly with a modern HE front-load washer - and line-drying the diapers whenever possible (In winter - always vent your dryer indoors - they make water filled lint traps for this purpose). Of course, at $30.00 a pop, having enough to do a full load is an expensive proposition.