Did you not read what I wrote? Not sure what point you are making... I don't need to brush my hair, wear clothes, or wash my car either... But those are usually considered "proper" things to do. My first load without rinse aid resulted in spotty dishes. Not too bad, but annoying. By the third, it was worse. By the end of the week, all of the glassware was milky white and you could no longer see through it. You know that feeling you get when you run your finger nails across a chalkboard? Yea, we were getting that feeling by just running your hand across a glass plate.

I ended up buying more rinse aid and then running the milky dishes through a cycle with about a 1/4 cup of coffee machine cleaner (citric acid) thrown in.

Our water comes from a local lake and an underground aquifer surrounded in limestone if you are curious.