Ha, I also got most of my initial experience the same way :) I use k8s at work now, am somewhat frustrated with it and would like to run a k8s cluster at home, but I have a hard time justifying it. I'm not sure if a pi k8s cluster would make sense for me either, although I do have enough pis laying around for a small-ish one. I've considered ordering a couple (more) r210 ii's and making a cluster, but don't know what the stack would be exactly.The beefiest machine in my home currently is an unraid server, and I run a small number of services in a docker-compose stack on a vps.
Do you find that there are functions that are unique to k8s for a selfhoster that demand a system with that kind of overhead?