I'm thinking about starting a self hosting setup, and my first thought was to install k8s (k3s probably) and containerise everything.
But I see most people on here seem to recommend virtualizing everything with proxmox.
What are the benefits of using VMs/proxmox over containers/k8s?
Or really I'm more interested in the reverse, are there reasons not to just run everything with k8s as the base layer? Since it's more relevant to my actual job, I'd lean towards ramping up on k8s unless there's a compelling reason not to.
Why not use both? I have PVE installed on all of my hosts and then use k3s/docker in VMs. If there ever is anything you don't want to or just can't deploy as a container (e.g. opnsense, hassio, truenas, windows [for whatever reason you might have]), you can just spin it up as a VM and not worry about adding and maintaining another physical machine
If you are using PvE for linux "VMs" those probably aren't actually VMs but LXC containers. And if you are running docker in one of those, you've got containers in your containers.
My brother in Christ, how would one confuse a VM with an LXC in Proxmox? They couldn't be more clearly labelled as different things than they already are. But don't let this distract you from the fact that in 1998, The Undertaker threw Mankind off Hell In A Cell, and plummeted 16 ft through an announcer's table.