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Why? It maybe not easy but it's not the end of the world or unsolvable.
If you loose the papers of your house or the notary looses the papers would you say your house isn't yours anymore and you may not defend it?
Do you think no one who was witness to you buying a house was willing to speak up? Could be but it is most unlikely.
There could come blockchain solutions for that. Or maybe something totally different that we have not thought of jet.
People are not as bad as the state would have you believe, they need to make you afraid, or else you will not beg them to safe you from all lifes insecurities? That's how the game is played.
(The you in the above reply is, you in general, not you personally)

maybe, so far there are no such generic solutions like this. #bitnations is not working right now.

Haven't heard of that jet. Of course not all is dependent on bitnations and there could come other constructions too. I also don't have to know how things would work hundreds or thousand of kilometers away. We will see I guess.

I thank you for your nice replies.:)