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Many folks might not even know if they lost possession or not. They cannot find their Trezor, but they also cannot remember for sure where they last put their Trezor.
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This may sound too harsh, but these people do not deserve to own Bitcoin. I will not feel the slightest bit of sympathy for them if they lose their coins.
Would they do the same if they had a
suitcase full of cash? Would they forget where they last put it? I bet they wouldn't.
Extended family history: lost (for a time) quite a bit of money (bearer bonds or something like that) by putting them, as it turned out, inside a big book, then properly forgetting it completely. Family was looking for this for years, then found the 'instruments' when they were moving many years later. Alas, by then most of the value was eaten by inflation.
Don't think that you would always remember that odd password that you concocted recently and did not write down somewhere. Memories could fade.