Anti-Facebook Revolution Gaining Momentum?

In my completely biased and unsystematic research of late, it appears that the degree of anti-Facebook sentiment is growing. People now sometimes seem to sheepishly admit that they are on it, and then offer some lame excuse ... ("I am only on it to share pictures"). There is a sizable amount of discontent, and one wonders why a viable alternative (without the annoying aspects of fb) hasn't arisen yet ...