When I lived in a major city, I went 10 years without owning a car. Should I for whatever reason need a car, I could rent one. But other than that, public transportation, walking, and biking for me. Hell, I often preferred public transportation over a car.
But as soon as I moved back home, a rural area, a car has more or less become a life necessity. I simply can't imagine living out in rural nowhere without a car, it would be such a hassle. Where I live a bus goes 3 times a day to the neighboring towns, that's it.
It really depends on where you live, and what your logistical situation looks like.