I think the disconnect here is that people don't seem to get that "I voluntarily signed up for a social network" is an important step for a lot of people. It's entirely possible that a lot of people who hate g+ now wouldn't have minded it if it came out of the ether right after Facebook got popular, instead of being retrofitted onto something that already existed and foisted on that userbase above its protests. You can't just unilaterally change the purpose of your site and expect people who liked the old site to automatically like the new one.

FWIW, I also hate Facebook Connect and refuse to use it on principle despite having a Facebook account I voluntarily use.