@maxdancona,
You have not provided an answer to the question, and neither have the "experts."
Banning commercial flights from Ebola affected areas to the US will have no affect on transporting known Ebola patients who need to come to the US for treatment. The original healthcare workers who came to Atlanta for treatment were not booked coach seats on American Airlines.
Someone from the CDC or NIH may think a travel ban is not necessary, and they have alluded to how it might hurt the countries from which flights would be banned, but they have not provided a reason based on their area of expertise. We don't need them to provide reasons based on politics, economics, or what does or doesn't send a "good message."
The number of flights from these countries is not great enough to result in significant loss of profit or any loss of airline jobs. Any ill effects will be felt by the West African nations involved.
If there is a legitimate, explainable reason how such a ban would make the medical situation in these countries worse, I would like to hear it. I don't think that's too much to ask.
Now there is a second health worker in Dallas who has come down with the disease. Still no panic but understandably, anxiety levels are rising. If trained staff in haz-mat suits can catch it, the average person is going to start questioning explanations that it is very difficult to become infected.
No need for a a spiel on transmission, I appreciate that these people are in the belly of the beast in terms of contact with virus laden bodily fluids, but it doesn't take a panicked imagination to conjure up thoughts of an infected person, unidentified by the healthcare system, going about his or her business and leaving traces of their bodily fluids in public places.
As long as the only people catching the disease are health-care workers who come into direct contact with patients, I think the public will remain at Anxiety Level 1 or 2, but if and when someone outside of the healthcare system come down with it, it's going to get pretty tense.
Sometimes it's a good thing to take steps that do nothing more than make the public feel less anxious. Since you think panic (which has yet to materialize on even a moderate scale) is so dangerous, I would expect you to be in favor of taking steps to keep it from rising, even if they have no appreciable impact on controlling the outbreak. Whether you and the experts are correct that the average American has nothing to worry about, at some point circumstances can conspire to create a situation where the average American isn't going to listen to you, no matter how loudly you shout at them that they are a stupid herd of stampeded cattle. At that point a major component of the crisis becomes public attitude, and steps to manage that attitude will be required. A ban on flights from West Africa might be a big help.
A ban isn't worthy of consideration if it is going to actually make the health situation worse, but when people stop listening to "Don't worry because we're the experts and we're telling you not to," they're not going to be happy with a "We can't ban the flights because it will make things worse, but we can't tell you specifically how it will do so."