Depends, I just enjoy running my own server rack and self hosting a bunch of stuff. It's nice not having a dependency on third party cloud storage for example, I run my own "cloud storage". I also learned Kubernetes using my lab and it was a lot more interesting than if I had just deployed one using a cloud provider, bare metal is really cool. The amount of compute power + storage + memory that I have for my cluster would easily cost £300+ a month in the cloud.