[claudius]

Only if the encrypted data is still around when decryption becomes feasible. I doubt someone is sitting in my closet and recording every bit of wifi traffic in my local network, so this traffic should, in theory, be fine. The same goes for encrypted hard drives – most of them won’t ever go through an agency capable of/interested in storing encrypted data.

Furthermore, I think that there are (classical and practicable[0]) encryption schemes which cannot be attacked by e.g. Shor’s factorisation algorithm, although I fail to remember their names.

So, depending on the threat model, encryption may well be permanent privacy, but of course you have to take future developments into account – even classical computers will get better.

[0] At least more practicable than XOR with a key the length of the plaintext.