Have you ever seen Amsterdam? About 60% of people ride a bike daily, and it accounts for about 40% of all traffic movements in the city.
If you replaced all of these bike journeys with cars, the yearly economic burden would be around €750,000,000 (~$785,000,000) from congestion alone. Are bikes good for all journeys, no. But it’s hard to say that most cities wouldn’t benefit from design that allows more short bike journeys.
If you’re willing to walk somewhere then the idea of the bike is to make that trip quicker and expand the range of the trip in the time you have. Not to replace all car journeys.
In Europe this would likely be 30 mins commute on a train if you work in any sizable city. And you can take your bike on the train and finish the rest of the commute on the bike.