Great point and I think this is my biggest problem with Facebook actually. Now that most of my peers are doing fairly well, no one seems interested in anything but complete, feel good narcissism.

Important issues in the world? I don't want to think about that because it will make me sad.

Oh look my friend is drinking on the beach? LIKE.

The best part is how predictable it is. I definitely refrain from posting "important" things if I know people would react poorly because they aren't just straight feel good garbage, whereas today I'm in Hawaii and posted a pic of the beach and it got a ton of likes. It makes me feel like people become accepting (read: ignorant) of sad stuff in the interest of liking every pretty, fun, positive thing they see.