Everyone has their priorities - and transport budgets, as set by the DfT (rather than the DoH) are also important for keeping people - and economies - moving. It's like you're making out sustainable transport isn't important. From a health point of view (walking / cycling), I could make a case that it is.
I completely agree with you on this point ( bet you didn't expect that ! ) BUT I'm also of the view that an equal amount of thought and planning should go into getting traffic flowing as fast as possible. People will still use their cars regardless and so to keep congestion and therefore pollution to a minimum we should work out how to get private traffic in and out of the city as fast as possible rather than just concentrating on "persuading" people out of their cars.
A good example of what I mean is I drive along the OSR say two or three times a week to the North Laines area. It used to be a breeze but since the road space of cars has been reduced there are queues from the Upper Drive all the way back to Hove Park. Now I'd be f***ing fuming if I owned a house along that stretch now they have all those extra car fumes pumping out during both rush hours. By all means encourage cycling etc but purposely slowing private traffic ( and it can only have been on purpose because even a non-expert could have predicted the result on OSR ) actually increases pollution.