Oh that's actually a much better deal, then. A Berlin monthly ticket is 86 a month (ok... or 63 with a 1 year commitment), which is already 1/4 (or 1/5) of the 4k...
Given, I have a "car dude" that repairs and sells me used cars in good condition (I don't drive much at all), but even if you would spend a bit more, it isn't as competitive as it needs to be.
But other than that, cars are almost essential today. Have family you need to take care of? Good luck doing that with public transport. Doable perhaps if you quit your job...
> The BahnCard 100 is also valid within the City-Ticket zone of all towns and cities covered by the City-Ticket offering
City ticket coverage: https://www.bahn.com/en/offers/tickets-for-local-transport