There are many, many reasons to avoid buying a new car: always-on data connections (either to the internet or to the manufacturer, who can add or remove features at will), nanny features like automatic braking and lane assist that take control of the car out of your hands, endless amount of sensors whose sole purpose seems to be to make the car inoperable so that you have to spend hundreds if not thousands of dollars to get it fixed, etc.
I'd rather drive a 1990 Ford Fiesta.