Please consider this as constructive criticism, not a whine or attack.

The poll hasn't really tested that hypothesis, imho. I would think that most of the movement from one type of handlebar to another happens at the point of purchase, by buying a bike with the new setup, rather than by changing an existing bike. I think that someone who replaced a flat bar hybrid bike with a drop bar road bike would probably vote "On at least one roadie, I have always used a drop bar". As a rider, he went from flat bar to drop bar. But the poll puts him in a "no change" category since he didn't modify a bike.