I was initially pretty apprehensive about running Kubernetes on the compute nodes, my workloads all being special snowflakes and all. I looked at off-the-shelf apps like mailu for hosting my mail system, for instance, but I have some really bizarre postfix rules that it wouldn't support. So I was worried that I'd have to maintain Dockerfiles, and a registry, and lots of config files in Git, and all that.
And guess what? I do maintain Dockerfiles, and a registry, and lots of config files in Git, but the world didn't end. Once I got over the "this is different" hump, I actually found that the ability to pull an entire node out of service (or have fan failures do it for me), more than makes up for the difference. I no longer have awkward downtime when I need to reboot (or have to worry that the machines will reboot), or little bits of storage spread across lots of machines.