I do, but it's mostly just "because I can."

I signed up for the GitHub education pack, which provides (among other things) $50 USD in DigitalOcean credit. I spun up one of the $5/month droplets, primarily to use as an IRC bouncer. But, since I now had my own Linux server with a static IP address, I said "Why the heck not?" and bought a domain name for $10.

So now I have an IRC bouncer and a personal blog. (And a Quake 3 server...because I can)