This has always been about giving the CDC a chance to study the virus in a human host under optimal conditions. There is no way to carry on such research in the field, and we cannot intentionally infect people with Ebola just to see what it will do.
Finding a way to crush or even vaccinate against Ebola has been one of the holy grails of virology for decades. If we can figure that out, it opens the door to perhaps defeating a lot of other deadly viruses.