I see what you mean,bro. But I guess in that case selfishness exists within us all. Sometimes even all the great love we may trumpet for one another may have a streak of self interest attached to it.
In all honesty that's what makes me completely live by the hadith posted by Khaderbhai. Ie love for Allah's sake only. AND place your trust again only in Allah. Human beings are far too weak, fickle and prone to change to love and trust passionately and blindly.