Pointlessness
It shows the pointlessness of following certain news. There is actually almost nothing at all to gain from following MH370, except to understand the problems/limitations of the systems we depend on and live in.
As a common man on the street, you are the last to know. Now, if you were the head of the Malaysian Air Force or better yet, the USAF, you would be far more likely to know the truth.
Conspiracies
Actual conspiracy theories exist solely to "explain" what we may never know, but would really love to know.
JFK? The damning evidence is probably missing, the people who really know are fast taking the answers to their graves and as Galadriel says "
History became legend. Legend became myth. And for two and a half thousand years, the ring passed out of all knowledge."
The story of MH370 will probably live on like those Bermuda Triangle stories we've all heard as children. You know what I got from that? There is mystery and wonder in the world waiting to be found. This is one of the coolest things a child could learn.
The Anti-Conspiracy Crowd
Some people hate conspiracies with a passion. They accept everything they hear, and like calling anyone who speaks of such things as conspiracy theorists.
Isn't it obvious what's wrong here? It's a label with negative connotations. If one falls for this, they will not even try to understand the competing theories, because then you would be a 'conspiracy theorist'.
Of course, others use the label 'establishment shill' to the same effect.
So how do you tease the truth out of the mess?
Pooled Forecasting
Have discussions with different, opposing viewpoints, while everyone is on the same page, moving in the same direction, trusting each other.
Does it really matter?
To the rational mind, it's like asking "Did Snowden really tell us something we couldn't have guessed, reasoned, saw on the internet/books/media?"
Not really.
Did we know we should use open-source software, encrypt everything we want to keep secret and keep an air gap for anything that cannot afford to get hacked? Of course we did.
The emotional part needed the shocker. We all know somewhere, how much we don't, cannot know about this world. We just needed an example.
Remembrance
Some people have this need to be followed by others. It's scary for them to just be whisked off suddenly. Hence, they have a need to be found.
Ironically, they are probably going to be remembered for much longer for this.