It's simple, if you are over the age of 30, you are most likely not finding the use for this, or maybe if you have 2 friends. It's not even that, you make Facebook what you make out of it.
If you get into Keyboard Warrior scenario, it means you seeked that out. No one is telling you to get involved or have friends, like pages which trigger this.
Find your privacy invaded, get of the Internet made, because hate to break it to ya, your privacy has already been invaded. You can tell me you are running Onion, VPNs, no-cache policy blah blah, but its all bunch of horse nuggets.
Facebook, Twitter and all of these Social Networking websites are extremely helpful, whether form business standpoint or simply communication.
Don't get me wrong, no going on Facebook will probably save me more time and I can spend it on myself but living a fast paced, high activity life, its quite a requirement for me as from business standpoint as well.
Sure, if I had to choose, Youtube would be the only platform id visit if I had an amazing house somewhere in Antigua and did not have to worry about anything just live of a "stash of cash".