FB earnings are up and their monthly active users are rising. That suggests that your single anecdotal experience of your friends not using fb is incorrect.
Also, OP was the first one to make the assertion that fb is losing users and thus the onus falls on him to prove vs. me trying to disprove it.
I know it is not the answer you want to hear but FB is doing well in terms of their user growth. Get over it.
I don't have a dog in the fight, I'm just pointing out you are both trying to back up assertions with no direct data. Facebook earnings could easily be from increased from ads even over decreased users. And users increasing doesn't really tell me if that's up or down from previous.
Also, OP was the first one to make the assertion that fb is losing users and thus the onus falls on him to prove vs. me trying to disprove it.
I know it is not the answer you want to hear but FB is doing well in terms of their user growth. Get over it.