We have a 3d volume to use up there. With TCAS and HITS I don't think it
would be that big a deal. With more airports the congestion would be
spread
out. We have the technology. We just don't have enough people willing to
implement it. And we're too unable to accept responsibility for our
actions,
always wanting to blame and sue somebody else so it will probably never
happen. But it's certainly possible. Look at all the traffic we fit on all
our little 2 dimensional ribbons of roadway. You think we couldn't handle
that in the skies?

I just don't like the thought of always-controlled flight... well, that and
I don't trust a computer to do all the flying and navigation.

Basically, driving a car is within the capabilities of most people (well,
supposedly, anyways). Flying isn't... the average person doesn't have the
attention span, coordination, or judgement to fly an aircraft.