I don't know about you guys, but there is a lot of gore on facebook. When i was a regular user i constantly had to flag some content.
So yeah, have fun with that on your phone screen.
These of course is not the case for everyone, but everyone has different experience, but most of the time we don't want to see what our friends post on our homepage. Either people will get used to it, like Timeline, or the app will be a failure.