I run a small home lab, about 30 services 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.…
Half of the work is to know what you need, the other half is to know how you do it, while the third half is to cope with all the undocumented tinkering which happened along the way. So in that regard, starting from scratch can be acceptable, as long you are not starting from zero, and can build up on the knowledge and experience of the previous run(s). I mean, there is a whole gaming-genre about this, which is quite popular. And usually you have the benefit that you might be able to fix some fundamental failures which you had to ignore because nobody wanted to take the risk.