Genuine question - why should we, or why should I?
Because there are health epidemics and we can offer solutions. £10bn lost each year in the NHS to obesity, diabetes and heart disease. Cancers can also have their risks reduced.
Because up to £36 billion is lost to the economy and the tax payer due to road collision. Less private motors used for local journeys means less risk of that happening.
Because air pollution still damages our health and our nature. It also interferes with out livestock and our farm produce. A bicycle, post production, produces no air pollution or CO2. 80% of all harmful air pollutants come from motor traffic.
Because parking is a real issue for councils and business, and traffic congestion is interfering with business.
We all have a responsibility to promote cycling and its benefits as we all have a responsibility to society whether we sit on the right, centre or left of the political spectrum. The motoring lobby is strong because in the main motorists support it, cyclists have to take some inspiration from certain aspects of how that has worked.