Well, to me cyclists should stick to the roads. It's just a
matter of proper cycling etiquette, like keeping to the sides as
much as possible, signalling well in advance, and making yourself
visible.
The only exceptions would be young children, for I'd rather see
an annoying kid cycling on the pavement than a dead kid lying in
the middle of the road.
As for adults, they had better damn well cycle on the road, or
don't cycle at all. I've had quite a few close calls with cyclists
on the pavements.... those damn idiots don't even know how to
signal with the bicycle bell before they cycle past me from
behind.
I guess spending long hours on the bicycle seat must have
squashed those idiots' nuts pretty good. And since their brains are
in their nuts, well.... you get the picture.

finally, someone who understands!