There is another argument (which I don't subscribe to because I look like a weirdo anyway) which goes like this:
More people looking normal and less like weirdy cyclists (i.e. lycra clad and helmeted/high-viz jacket and helmeted - because most people who wear helmets are either wearing lycra or high-viz) = more non-cyclists start cycling because they think 'hey I don't have to look like a weirdo cyclist' = more cyclists on the roads = drivers more used to cyclists + less drivers = safer roads for all. Hurrah!
There is another argument (which I don't subscribe to because I look like a weirdo anyway) which goes like this:
More people looking normal and less like weirdy cyclists (i.e. lycra clad and helmeted/high-viz jacket and helmeted - because most people who wear helmets are either wearing lycra or high-viz) = more non-cyclists start cycling because they think 'hey I don't have to look like a weirdo cyclist' = more cyclists on the roads = drivers more used to cyclists + less drivers = safer roads for all. Hurrah!