I've been hosting a Teamspeak server for more than half my life, it's acted as the communication hub for the majority of my time gaming.
It's fallen off in terms of features and UX. But I feel the warm and fuzzies knowing that my memes and conversation aren't being fed into some neural network owned by microsoft.
I also love that I can just change the voice codec to whatever I please without me or my users forking over a monthly fee.