"Incidentally, why did Wills get downgraded from Prince to Duke when he married? I know he is still a prince, but why is he always referred to as Duke of ... Sorry if I'm going off-topic."
He didn't. He simply took on another title by which he is known. Rather like Prince Phillip being known as the Duke of Edinburgh.
“It was a tragic accident, the whole World lost 'The Peoples Princess’ how we've survived this long afterwards I just don't know.”
I tend to agree with Balders. Whilst Diana’s death was tragic (and almost certainly avoidable) and not something I’d wish on anybody, the day she died was the day I believed half the UK lost its marbles. It saw the beginning of the demonstrations of third-party public grief which seem to prevail today. Wailing and weeping is not what we do in the UK, especially when it’s for somebody we don’t know. Had Diana lived she would not be in the limelight now. She would probably be a reclusive figure, wheeled out on the odd occasion her presence was deemed necessary (involving her sons). She was a manipulative woman who knew exactly what she was getting into when she married the Prince of Wales and still chose to do so despite the obvious downsides.
Back to the question – her death was more “misadventure” than an accident. Completely avoidable and not prevented by those around her charged with her safety. If anyone (especially “The Duke of Fuggin’ Edinburgh”) wanted her done in there were far more reliable ways of achieving it. This year should see the last of the ridiculous press and other media coverage of the event. Enough is enough.