See:
https://archive.is/https://www.nytimes.c...-musk.html
This isn't about just backing up data from your PC. All government and financial records pertaining to you, you should back up and keep both electronic and paper copies. Put the latter in a safe or firebox or something.
We have no idea what data is going to be lost, destroyed, misused, altered... I find that bad people are much more imaginative than me about doing evil shit. Protect yourself and preserve your data. It can't hurt, and it might help.
