Would MH370 still exist in any recognisable form on the seabed?

The missing Malaysian airliner from 2014 has still not been found in the depths of the Southern Indian Ocean. Assuming a controlled ditching, and that the aircraft sank more or less in one piece, is there any merit in continuing searching? Or, is it likely that so much time in the ocean has completely destroyed the fuselage, or perhaps underwater debris have likely covered it by this point? I figure the best people to answer this question on reddit are in this community. Thank you in advance for taking the time to reply.