Try measuring your water usage with elbow grease.
An EnergStar-rating dishwasher has to use ≤15L on its normal cycle, even with a full load. Imagine how many dishes and pots and pans you can fit in a standard dishwasher.
* https://homeguides.sfgate.com/many-gallons-water-used-dishwa...
The dishwasher tablets we use are $0.16 each. If we ran the dishwasher everyday, that’s under $60/yr. Rinse aid adds about $0.04 per load, so < $75/yr total for daily use. Are they wildly more expensive in other places?
The powdered detergents are even cheaper I think, but I’ve never had reason to consider further economizing as we run 3-4 loads per week for a family of 4.
To free time so we can pursue the things that could let us become rich.
> rich people buy one just to flaunt their wealth but dont use it
Yes, because they have people do the dishes for them
elbow gease, is just a part of the routine. You cook, you eat and you clean.