A.) That's not my point and you know it. I also noticed you still haven't actually pointed out why such a ban is a bad idea.
Enforcing it would be a horrible waste of resources. It's not as if people from there would never consider coming here if we cancel the direct flights, so for a travel ban to be have any effectiveness, we'd need to do background checks on every passenger arriving here on any flight.
It won't accomplish its intended purpose.
Indeed, by making it more difficult to get assistance to West Africa where we need to send it if we're to get Ebola back under control, a total travel ban actually makes it more likely we'll get additional cases in the US.