well that goes back to one of Anon's last points: that if cities were designed around it, everyone would be fine with it. because in a city designed around cycling, there would be room for passenger cyclists just as there are passenger cars.

when you think about it, this rebuttle essentially comes down to the plain ole fact that humans have differences of ability. there's nothing inherent to car-based society that offers disability support that we couldn't provide with a cycling-based society.