We tried, Marco, for about four months. We live in a city that is designed around cars, much more than the photos suggested, and with three kids, school runs, a weekly food shop and sport on Saturdays in three different places, the buses simply didn't work for us. The final straw was a Sunday when my youngest was ill and the nearest open pharmacy was a forty-minute walk away.
What I'd tell anyone considering it: look at your real week, not your ideal week. Where do the kids go to school, where is the nearest big supermarket, where is the nearest emergency service, and how do you get to each on a Sunday evening in winter? If most of those need a car, you'll end up with one. We bought a small used one after four months, and I'd have saved money by buying it in month one.