[Margaret Pilkington]

Yes, I can fully understand that relatives need closure.
And in real terms it doesn't really matter how the incident occurred (except families of those lost would not agree) those people who were on that flight are lost.

Knowing how they were lost will not bring them back.....it would only give those left behind, someone on whom to lay the blame....insert a 'grudge' in their life that serves no useful purpose.

After we lose someone we tease out the minutiae of the life that existed before they were lost.
We look to make sense of things that sometimes have no sense in them....and when we have done all this are we really any closer?

We have to set down the emotional baggage and move on.
If we do not do that, then we are hampered by it and it is a burden which prevents us from getting our lives back to a different kind of normal.