No, just a hobby. Been playing around for about a year. It started small with an old mac mini and Yunohost. Then I decided to play with Proxmox and bought a used m93p. Then I read about Proxmox clusters, so I got another m93p. I was going to use the mac mini in the cluster, but it was getting too slow, so I bought the Brix. Then I decided to migrate the Yunohost setup over to a VM in Proxmox. Then I figured I should learn a bit about docker. And it spiraled.
I spend maybe 10-12 hours a month on installation and configuration. I spend way more time using it. A couple of weeks ago I spent about 15 hours over the weekend importing/uploading my audiobooks into AudioBookShelf. Last year I spent several weekends getting my Calibre library in shape and moving it to the web.
I figure this is a much cheaper and safer hobby than drinking.