I long stopped be a user of Facebook.
In the beginning I liked the easy way it afforded me to keep in contact with friends and acquaintances. Then it included more and more "other" stuff, and I just lost interest in it. Shame really. In the beginning it was so useful and I honestly did not mind being shown some ads in exchange for that.
But now my data would be used not only to selects ads but also the other content, blurring the difference between what is an ad and what is "content". Facebook lost its way, and it looks like they're not looking for a path back.