My dishes fucking sparkle, and that’s because I rinse them clean.
This is how I can tell you live in an area that doesn’t have hard water. Water spots all over my dishes, even though I rinse them… sometimes because I rinse them.
I do actually live in an area with hard water, and don’t have a water softener. Even then, I think the heat of the water I use maybe helps - there’s only ever a tiny little bit of water left to drip out. I’m not very energy effecient with it, I run the hot tap very hot to rinse.