The number one reason for fear of flying is LACK OF CONTROL. People do not feel like they have any control over the situation.
As a flight attendant, I obviously do not have a fear of flying or else I'd be on the ground somewhere

But talking with pgrs. on board who are scared, that is their #1 fear. Many times I have them go talk to the pilots to help calm them down. Most people who DO have a fear of flying, have not had anything bad happen to them on an airplane before!!
It is interesting to note that I do have friends that have been in crashes before, and they are still flying. Even though odds are low in it happening, the reality is, yes,it can happen, and yes, it is sometimes survivable.
I for one, have always been for comfortable in a plane, and in light of what just happened, I still do. I'd much rather take a 2 1/2hour flight from Chicago to Orlando then drive 25 hours, and encounter thousands of unknown drivers!!!