aw c'mon guys
Dave's kinda funny.
Of course, if a means of transportation is to proliferate, it must be easy to control the vehicle.... Hence the proliferation of automobiles.... So Dave is right, but the real question is the possibility of making a rotorcraft easy to fly. That might be impossible....
Now, a simple analysis of that problem recognizes that the rotorcraft has mobility in three dimensions, whereas the automobile is limited to two (and it doesn't have full mobility in the second dimension because it can't move side to side).
Therefore, the automobile is naturally easier to control.
IMHO, fuel efficiency is another equally serious obstacle, for the same reason that ease of control is an obstacle.
Now in all seriousness I really appreciate your posts, because you make the rest of us think....
Z