I would much rather pay for using their site with money than with all the data they are gathering about me (if I still used the site). I still support the notion that you get what you pay for. And what you are getting at FB
is being paid for, even if you think they aren't tracking you and you don't see the ads. Fortunately, advertisers are learning that many of us are blocking their ads.
While you may not be bothered by what they learn about you, I'm not sure that's the best policy for all FB users. The vast majority are simply ignorant about what they (both FB and the users) are doing. Despite what you have heard, what you don't know
can hurt you. Many people are discovering this too late in their experince with FB and other "social networking" sites. The fact is, we have no idea what they have collected nor who they've sold it to, much less if it ever gets deleted.