Yeah that's how I felt too. I remember being excited about g+, then I also remember aggressively turning off any association to g+ because no one was on it and it kept pushing it in my face. Come to think of it gmail was similar, invite only and that, but it wasn't forced even at release and they made it look a lot nicer than what yahoo and hotmail had going on at the time.

For a while, Google bonuses were tied to social integration. That's why you saw the huge influx of insanity.