The use cases for headless access to your homelab include:
- Servers are in a remote part of the house, e.g. Loft, Garage, Shed, etc
- Servers are actually in a colocation facility at a datacentre (yes it sounds expensive, but some people do actually do this!)
- You are a millionaire and have a whole DC full of your homelab kit! (Ok, maybe going a bit far now...)
Some example solutions to provide remote access to your screen are as follows:
If you start off with a small homelab with a handful of servers you may have the ability to connect them all up to a single management keyboard, mouse and screen.
KVM over IP / Remote KVM
When you want to take the KVM concept a step further it is actually possible to connect up to a KVM switch with remote IP connectivity, though they aren't cheap!