[utopiah]

Sure it's still a big deal but it's not as if suddenly everybody get a quantum computer and can use it nilly-willy. It will be (or is) scarce enough that information has to be selected as critical in order to be deciphered a posteriori.

The time between the moment the information is recorded and when it's deciphered is what matters, rarely the information itself abstracted from all context.

So even if suddenly having a classical cryptography is broken, trivially, then there still need to be a way to search through it.

Typically for a random person that means their credit card pin and their email password for example. Well, you chance that and if, say the NSA, can decipher your old email password even 1 minute after you changed it, no big deal. If they can decipher your old emails it might be a big deal but probably not. I would argue it depends on actionable information (e.g. a coup happening tomorrow) and legal information (e.g. the proof that a certain person was an informant and should be extradited).

So... I would argue historically, huge deal, daily life... probably not much for most.