I haven’t yet, but eventually I plan to host my own and just sub to other instances from there, specifically because I trust myself more than other mods. And I think that’s a big goal of federation—if you want, you can just* run your own instance and you shouldn’t miss out on anything because of it.
*It can still be quite difficult to set up instances, depending on what software you want to use. I hope this will improve dramatically over the next year or two, so non-IT-professionals can participate in the network.