Family and friends would never allow you to drop it and Darren Vickers did the same so the police wouldn't suspect him i.e. reverse psychology.
1) family and friends would never allow it? That's only in your opinion. Everyone's family and friends are different. Mine would I'm sure be understanding, possibly even encourage me to try and accept the inevitable and get on with my life, especially if my health appeared to be suffering. If I was a friend of someone in that situation that would be my advice, indeed it would have been my advice to the parents in Alfie's scenario when they were released from arguido status and the case shelved, not that they would have listened, as unlike me they still seem to have hope and are not easily defeated.
2) Darren Vickers is not someone I am familiar with. Did the case against him get shelved, and did he campaign to the PM for his crimes to be reviewed by the Met? Perhaps you could provide me with a link?