Backup was never optional though. I used to keep clones of Windows because a Windows was hard to set up and running.
But with Linux, I only have to think about my configuration files. Now, even if I nuke my OS, I can still restore it to be close to the original state.
As for documents and other non-OS data, each have their own places.
China is everyone's 1st/2nd/3rd largest trading partner.