Even if they did, since they allow more people to move around town, wouldn't that be a net win? Every person on a bike is one fewer car on the road; less danger

Even if they did, since they allow more people to move around town, wouldn't that be a net win? Every person on a bike is one fewer car on the road; less danger to others, less noise, less air pollution. By disincentivicing car use, fewer people will choose to drive, which is a win for everybody outside the vehicle.