I think your response is a typical one from someone who does not use social media. You may have no understanding of the incredible size of people who use nothing more.
Personally, I wont even join a site unless it has quick connect, and I would guess that the younger generation that is growing up and slowly becoming YOUR users, will all be the same.
I would always suggest thorough integration with social media's. And btw, all connections at all sites will require permissions like you mentioned. Any average social media user will be used to that.
Well, first of all, mine is a question and not a response.
Second of all, your point of view is from a Social-Geek prespective. You should think who your target user is. It might not be a Social Media addicted or a young generation fellow, therefore not keen on quick connect for a privacy matter.
Said that, I'm going to install a quick connect too on my community 