Yes. I have a healthy, but irrational fear of falling. Heights do not bother me (flying in a plane is no big deal in terms of the height). But if I am even a foot above the ground under my own power (say, on a ladder), I get extremely unsteady and nervous.

So bicycles were out pretty much from the beginning.

My family, when I was young, would try to convince me by asking, “how can you drive a car if you can’t ride a bike?” Yeah my response shut them up pretty quickly: “a car has 4 tires and is stable.” I was seven years old.