Why the facebook app isn't working

Many of you might use facebook. If you have an android phone or tablet, you also.know the android app of facebook and you might also know: IT WORKS FREAKIN' SLOW OR COMPLETELY NOT!
So why is this?
I think the programmers at facebook don't test and debug it enough. But maybe they also just don't make use of Android's features. Because if they did, the app wouldn't be so bad, would it? So let's hope it helps that everybody working there has to use the app on android now. If it then still doesn't get better, I'll uninstall the app.
So all we can do is wait'n'hope,or?
Tell your thoughts in the comments!