Probably the main reason to keep looking for it is to determine what happened. It won't be good for the world if planes just started to veer of course and "disappear". There are many scenarios, and at this point none are particularly obvious as "the" answer as to why things happened. So far, it appears that the transponders and the automatic reporting system were deliberately turned off prior to the last verbal communication. At the exact point of handover of air traffic control (between the Malaysian and Vietnamese control centers) the plane veered off course. The course appears to have been programmed in, which requires pilot, or at least a knowledgeable person to understands how to reset the autopilot. The direction taken appears to have been pretty direct and at a constant altitude. The target appears to have been one of the most isolated places on Earth, namely the southern Indian Ocean. The suspects in the case, the pilot and co-pilot have been investigated, and other than some deleted files that were found on the pilot's home simulator, nothing pointed to links to extremism. Most of the passengers' backgrounds were checked, and pretty much all appear to be ordinary folk. So we have the death of 239 people in unexplained circumstances - not something we can ignore or dismiss. All of these people had families, friends and played roles in society - and now they are "disappeared". That is the tragedy - and the reason why efforts continue to be made. One may question why "this" group of deceased is more in the awareness of the world compared to the death of at least 251 refugees that were crossing Lake Albert (between DR Congo and Uganda). Probably because we can't claim direct experience with overloaded boats fleeing armed conflict, but we can imagine being on a plane and personifying the unexpected terror of learning that your destination is death. We need to pray for both groups - we are all part of the web of humanity. I would like to imagine that my life is at least partly under my control, and that my family will escape the seemingly random acts of violence and misfortune that we read about. However, that could be a self-serving illusion. Still I grieve for the lives lost.