Living in Europe, in a flat-land area. So shorter distances than I hear are in the US (10 km radius gets you all the shops, services etc. you need). So yes - no car for decades. Kid gets into a bicycle trailer. Densely populated arela makes lots of traffic jams and hard to find a parking spot. Public transport is very good also - that's important. Finally, I'm fine with winter - not all the people are.
I do however think having a one car in the family is useful - there are occasions when I need to borrow one (hauling heavy stuff, field trips with the kid - still too small for a motorcycle - etc.).