Stadia has been perfect for me, zero complaints. The subscription is well worth having a library of games to explore (or replay, in the case of Superhot).
I'm a new dad, so jumping in and out of games is important. Sadia makes that easy, unlike the huge updates on my Switch (nevermind the filled SD card). I also love that I can move room to room without needing additional docks - just a multi purpose chromecast.
There is so much fear/noise in this thread about Google shutting it down, and I gotta say, I'm just not worried about that. If it happens, so be it, I'll have gotten plenty of value out of the platform. Are you not going to see a movie in a movie theater because you don't own it after and the theater might go out of business someday? Are you all still buying Blu-ray? Everything dies, live a little, go stream Doom Eternal.