Quoting MrDuck
"With the (reasonable) scenario most lately discussed..."
Because we don't KNOW:
If the scenario is what actually happened
If the boxes will have data or not (as others mentioned, this itself can be telling)
Heck, there is not a lot we do KNOW for sure other than the plane did not land as expected, millions of people are still fascinated by this and many families are in a lot of pain.
I know there are some other facts but they don't really tell us a whole lot. We reasonably believe this and that but we don't KNOW much at all. I think this is where the fascination comes from.