This is really context-dependent. Some cities/countries do have efficient enough public transport, and/or they're flat enough to make bikes usable.
In such contexts, using a bike is a realistic choice (like mine). This goes even for families with children (in some countries, parents who don't want to depend on cars use cargo bikes).
I know that in some countries/cultures, people will use the car even to avoid a 5 minutes walk (I know it for a fact; I'm familiar with that), with the result of massive traffic and pollution.