The current FB audience is already comprised of those that are over 35-40 years of age. As a early 40s guy myself I couldn't care less who the Kardashians are (I know the Kim lady, there was also a younger lady that did a Pepsi commercial and some former man that transitioned into a lady, Jenner I think?), but, ignoring that (let's say you could target me with sports-related quizzes), the fact still remains that Facebook the platform doesn't target the entire age-spectrum anymore (if it ever did).