On one website that I work on, implementing one of those stupid "like us on Facebook" popups (in the lower right of the screen) almost doubled the number of likes the page had over a couple of weeks.
Now, whether the number of Facebook likes your page has is a useful metric to you is another matter, which is why I put the word "work" in quotes above...
It's like you're actively denying the fact that it is, TODAY, the largest and most used social network in history.
Would you at least let it BEGIN it's user decline before you call it dead?
Let me guess: You ran to G+ on Day 1 (because one large advertising company is worse than another large advertising + email + search company...)
It's fair to say that your sample group is totally flawed.
A lot of people may whine that they are "bored" but that doesn't mean they don't use the site. That is the problem with going on anecdotes--they often represent what people say instead of actually do.
Subscribe to 5-10 "content" feeds and your wall will always have another joke or post to read...
Many people do this, I imagine.
It would not exist if not for all the shit they do to make the food cheap enough to keep their doors open.
Facebook == The McDonalds of social networks.