I'd say that's the perfect short answer. if there were more people doing it, that means there'd be more of a market, which means higher demand, which should mean more competition in the industry, which is generally good for us as consumers.

there'd also be more willingness on the part of city planners and the transportation departments to design bicycle-friendly roads, etc. and I don't think I need to get into all the myriads of health, environmental and economic benefits.

it's all about money. more people would do the trick.

--alex.