One day I decided to change my main disk and used the opportunity to rebuild everything from scratch and from backups. I was up in about an hour.
And then I spent a week fixing this and that, ah yes I changed that too and, crap, I cannot remember why this thingie is set up this way. And some more.
This is a one-man lab, with simple services, all on docker. I also work in IT.
Recovering from scratch a whole infrastructure managed by many people over the years is a titanic task.
I helped to recover my nearby hospital as a volunteer when it was ransomwared. The poor two IT guys over there has no idea how to recover and the official help was pityful.
I also helped with a ransomware attack on a large company. The effort people had to do to remember why something was that way, or just remember whatever was colossal. Sure a lot of things were "documented" and "tested" but reality hit hard.