You are probably a person who has been online for a long time, and seen a lot. You have expectations that are not similar to the majority of FB users. They are mostly young people, or poor, or from poor countries who only have a cheap Android phone, no laptop, don't know what Twitter is and they discover Facebook for the first time. They find uses for it without having any expectations (like, "If i want trending topics I'll go to Twitter").
You probably use FB for one hour per month because it's the most convenient way to catch up with your friends and family and they spend 4 hours per day because for them the internet is Facebook. FB uses statistics to become better for them, not for you.