(Teen Perspective) The Thing about Facebook is...
...We all use it, but we won't admit to it. We all sometimes feel insecure about our own lives and it is what we go to if we're even slightly bored. HOWEVER, it is not cool. Using FB isn't something to brag about or people want attention to.
Facebook Home brings the unwanted attention. Maybe some people would want to use it, but most won't want their friends to see they are using it.
I don't think that FB is going away or is dying, but I just don't think Facebook Home is ever going to become a "thing".