I do hate to add fuel to what I already don't believe is the case myself, but...
olasek says
People committing suicide are not exactly in their most lucid frame of mind, why would you then exclude certain behaviours?
In all honesty, you might be under an extremely lucid frame if ones intentions were to...
a) ditch the plane where it is unlikely to find and completely figure out what exactly happened
...allowing for...
b) insurance claim for your family (as the Malaysian Government has mentioned multiple times, oddly enough)
Suicide is likely not covered under the claim, but dying at the hands of terrorists will allow for both the insurance claim and a big lawsuit.
I repeat, I don't think that
is what happened, but would make sense