Do it. I have a cheap Linux server (non pi) running in my home, and it's immeasurably useful. It functions as a combination of a backup server (with an attached 8tb drive), Plex server (another 2 Tb media drive), PiHole host and MITmproxy etc.
Today I figured that I need to setup periodic email backups from my Gmail, and guess where that cron is going! I use Windows + WSL as my home machine so having a pure Linux machine locally SSHable is a godsend.
I though of getting a Pi but I'm just doing too much with the server.
I'm thinking it would be a great little all in one for making my gradual transition to linux from windows. For 100 bucks, I'm sure I could buy an OLD laptop, but I like the RPi route!
I was about to buy a rpi-zero-w with a KVM or remote into it but tbh the more powerful rpi4 sounds like a better option. It has the gpio headers and keyboard built in!
After years of programming professionally, these little things still excite me. :)
I'm going to pick one up just to have a linux box on my desk that's separate from my laptop and not a VM.
It's a little unfortunate that you can't pick a 8GB option, but 4GB is PLENTY. I remember my first RPi had 256MB!!