Teen here.<p>I'm firmly in the "hate it but can't stop using it" camp. I've tried G+, and for a brief period a few of my friends tried it as well, but we switched back when it failed to reach critical mass. That's all Facebook has going for it, really, is the people using it; I'm sure most of us would switch to a better network if given the chance, but we won't do it unless a significant majority of our friends come along with us.<p>I don't like Facebook's approach to privacy, I absolutely hate how many permissions the Facebook app requires on my Android phone, but if I cut myself off of Facebook I'm losing out on a huge, huge percentage of social interaction with people who I know but am not particularly close to (which for most people is at least 80% of their friends list). Plus all the history I've amassed on Facebook since grade 7.<p>For better or worse, teens are stuck on Facebook for the time being, and unlike the move from MySpace, I don't see switching off of it happening any time soon. Sure, there's Twitter, Instagram, etc. which are also heavily used by my age group, but only as secondary networks - Facebook remains the definition of online social interaction.<p>EDIT: A few more thoughts:<p>An important part of it mentioned elsewhere in the thread is the fact that Facebook basically acts as a glorified address book/communications hub - if I want Chris to come to my party or add him to a group conversation about something or share a picture with him, all I need is his name. Not an email, not a phone number, just a name. It's pretty incredible if you think about it. Nothing else comes close.