Not everyone missing gets to be on the missing persons website.
Lots of people are seen as too likely to have drifted away through choice by the police.
Missing Persons rightly recognize that some people will try to abuse what they do, but the end result of them trying to get the balance right is there are many missing people who aren't on there, but remain loved, feared for, and searched for, for the rest of their relatives lives.*
If police decide to close a reported case based on the chaotic lifestyle of the person and because there's no specific date, NFA, etc, the relatives are just told they must have suddenly successfully cleaned up their act, moved abroad, etc.
In our case family totally respects the missing members right to make a new life, just wants to be told they are actually alive and have made a choice, as too many things don't add up to make it likely.
There's a long term disinterest in investigating if that person is actually alive or if the rumors are true. She ran them a merry dance when young and now doesn't count, but she does to us and always will.
She's thought about, talked about non judgmentally, loved, and missed.
She had a smallish sum of money in trust. This is now likely to be taken by the government as the firm handling it changed their practice and needed to pay it to her, but could find no trace of her either, and her mum's not legally allowed to look after it for her as an adult, so it's viewed as abandoned.
We know the livelihood is she's probably dead, her remains dumped or hidden, but the fear has always been that she was easy to control and she might be alive and suffering. The pain and fears for her never go away.
*If you are a missing person who has no wish to resume contact but doesn't actively wish those you left behind to suffer for the rest of their lives, (I appreciate some people do) then please leave a simple "My name is/was X, I am alive, I don't wish to be found" message with www.missingpeople.org.uk/ and just carry on your the life you've created for yourself unhindered.
The organisation Missing People will not seek to trace you, you have eliminated yourself from their interest, and every time a body turn up your name won't be circulating across police forces as a person of interest.
- Staying missing means the people you say you want no contact with, carry on searching decades later, and making reports trying to make sure you aren't forgotten and keep your case alive.
If you honestly don't want this attention there is a simple way deal with it and end it