The only way for Facebook to exceed my expectations is to announce termination of business.

That's one move I'd bow to.

 

By 1.32 billion active users I assume they mean each and every person who has ever signed up for a FB account since they came into being and of that 1.32 billion, 1 billion are aged between 9 and 16.

 

Unfortunately, that's a pipe dream.

 

I've seen as many middle-aged individuals religiously on Facebook as I have seen kids and teenagers. Curveball there. O.o

And I'd assume the 'active' spread of users are probably the past 30 days of unique users.

 

Well if 1 billion are aged between 9 and 16 that still leaves 32 million 'other' people. I'd say that's a fair amount. Wouldn't you?
I don't deny older people don't use FB but it's far more popular among kids.