You take what would be your down payment and you get a trusted mechanic and get beaters inspected until you find one that's solid. Then you've paid for your car in cash you can now save what would be your monthly payment for another car down the road or just to have savings. When the beater finally dies you have some money saved up to replace it.
Instead what people do is walk into a dealership and use financing to get a car they can't really afford. Since they can't afford the car they can't afford the maintenance or repairs on it. Eventually that catches up to them as something goes wrong with the car and they're taking that car and it's negative equity and rolling it over into another car.
This is just Dave Ramsey talk. I know he despises loans because of his religious background but millions of households navigate car loans successfully as part of their financial portfolio.
There is nothing wrong with having a car loan if you are otherwise financially responsible and the monthly car payment is not stretching your pockets.
Plus, just because I have $25,000 stashed away, doesn't mean I want to place it all on a car at once.
I get what you're saying but credit is just another tool, if you're financially irresponsible it doesn't matter whether you finance or buy a car, bad habits will fukk you over eventually.