This is probably the inflection point in history where I lost all trust I had in Google. I don't know how much they saved by shutting it down (probably nearly nothing) but I know that for me and people around me it was a such terrible signal that I never trusted again Google for anything serious/business. Well done guys
For me Google+ was a lot like HN:
Peaceful, quiet and beautiful and lots Open Source content and smart people.
I still look once or twice a year but it seems everyone who are into building social media wants to copy not only the very limited functionality of Twitter, down to its dumb limitations, but also its UX and aestheti.
The exceptions I am aware of are Hubzilla (which lools seriously interesting but just confuses me and has no obvious way to enter - and yes, I can create my own instance but I cannot find anyone else), Diaspora (which I think copies Facebook and which is also confusing) and MeWe (which superficially look like Google+ but insist on repeating Googles mistake WRT real name policy).