Mark my words, within the next 3 years facebook will begin to decline. 90% of the people I speak to say they don't use facebook anymore because it's got boring.
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.