TODAYS MUSLIMS HAVE CHOSEN TO DISOBEY ALLAH!

I am sure that Islam is the religion of God Almighty but unfortunately its followers today have decided not to obey Allah, the Almighty God. How?
Prophet Muhammed (PBOH) is the religions leader and Allah has commanded all believers (Muslim) to follow him and that it is only by doing so that they can obey Allah.
But where is Prophet Muhammed today? He has died of course. Who then is his successor? Nobody! A vacuum has been created and there is no way Muslims can really obey Allah except they have somebody to represent this leader, Muhammed, whom they will follow exactly as if he is Muhammed.
I make bold to say again that except they have a leader worldwide, they cant obey Allah properly.
Though the Almighty Allah has chosen someone secretly to lead all believers in one God and whose advent would bring joy to the whole world, he hasnt yet appeared.
But if Muslims the world over know the significance of having a leader, they would quickly get together and chose one now.
The extremist Muslims that you hear their voices always can never speak for all Muslims, in fact, they are just harming the religion.
Islam is not the way they are portraying it, and some of what they do are evil, for example, suicide bombing there can never be any justification for that. And I have always wondered why good Muslims dont usually come out to condemn such.