> Why should we cycle more? Only one reason is really valid: save the environment.

It’s better for the environment, it’s cheaper, it’s more efficient(more bikes can occupy less space and move more people), it’s fun, it’s good for your body, it’s safer(if we don’t have to share the road with cars- for instance if the infrastructure for bikes were to actually exist), bikes are easier to maintain, bikes can access a variety of terrain most cars can not. I could probably go on and on.

IMO the only reason bicycles are seen as an unnecessary luxury is cultural. We aren’t all Lycra clad snobs who ignore stop lights, but for some reason this perception persists.